"Y-yeah..."
She nodded. Her pussy didn't reject me.
If anything, the inner walls twitched as if they wanted to take more of me, gently biting down on my cockhead.
That tiny movement made me want to start thrusting wildly. I barely held back and savored her virgin pussy.
So this is a pussy. Holy shit...
At first the tension made it feel a little stiff, but when I stayed still it turned soft.
Then came the heat.
I couldn't wait any longer. I shoved the rest of my shaft in.
A wet, meaty sound.
"Hyaang...!"
At last my cock was buried inside her.
I was too big to get the root all the way in, but her pussy was stuffed full of me.
A massive wave of pleasure ripped through my whole body.
That packed fullness. Hot, soft, tight, wet flesh wrapping every inch of me without a single gap.
Pleasure I had never even imagined before.
In my past life I never even held a girl's hand, and now I was inside a beautiful noona like this-because she wanted it.
The sheer mental satisfaction alone almost made me come.
I began moving my hips slowly.
At first I was clumsy. Not knowing how to thrust, I rocked my whole upper body with it.
I just swung my hips back and forth on pure instinct, chasing bigger pleasure.
But even that felt incredible.
And the woman under me was feeling even more of it than I was.
"Hah, nngh, ah...!"
I had no idea what getting speared by a thick cock felt like for a woman, but her expression was already lost in pleasure.
I hadn't even thrust many times, and already the urge to come was climbing hard.
At this rate I wouldn't last a minute.
Fuck!
Maybe it was because it was my first time and we were going bareback without a condom.
Having sex with a woman this gorgeous, of course I wouldn't last long.
Right as I was panicking over what to do-
"H-hngh, haaaang!"
Suddenly Iseol noona arched her back and let out a high scream.
At the same time her pussy convulsed, clamping down hard around my cock.
"Ugh!"
The crushing pressure forced a sharp breath out of me.
I almost blew my load right then.
I had barely even started pumping and she came first.
Her whole body shuddered through an orgasm she was feeling for the first time on a cock.
The sight was so filthy I nearly came inside her on the spot.
"W-wait... Sihyuk... just a second..."
She gasped for air in the aftershocks, begging, but I couldn't stop. No-I had no intention of stopping.
Her climax only poured gasoline on my fire.
Just like I'd seen in porn, I hooked her legs over my shoulders and started slamming my cock down into her pussy.
"Ah! Hngh! Hahng! W-wait, I'm still...!"
Wet, filthy slapping sounds filled the room.
After a few thrusts I started getting the hang of it.
My body learned how to lock my upper half in place and piston deep and hard using only my hips.
The better my technique got, the louder her moans became.
"Hngh, ah, ah! I don't know this, it's too deep...! Aaang!"
The amount of love juice pouring from her pussy kept increasing.
There was no tightness left at all now.
Every time my cock scraped along her walls, sticky juices squelched and sprayed everywhere.
"N-nngh! I'm gonna come again! Sihyuk, ah, I can't....!"
A woman's moans at the peak of orgasm were the best thing in the world.
A sudden spray.
Shuddering as she came, she squirted a short jet of fluid.
The look she gave me while biting her lip hard was pure submission.
Hearing her climax voice sent the urge to come roaring all the way to the top of my skull again.
Shit. This won't do. I want to fuck her longer without coming yet.
To give my cock a short break, I spoke.
"Noona."
"Hngh... yes...?"
"You're so beautiful."
"A-aah... th-thank... you..."
She tried to turn her head, embarrassed that she was moaning while getting fucked by a younger man.
So I deliberately caught her face, forced our eyes to meet, and said it sweetly.
"You're cute."
"Hnn..."
I flicked my hips slowly again.
When the head prodded her cervix, she panted out hot breaths.
"From now on, when it's just the two of us, I'll call you noona instead of teacher."
"Y-yes...! Ah, wait...!"
"You have to answer, Iseol noona."
"Yeees... I-I like it..."
I pounded into her pussy while raining praise on her.
Even while losing her mind to pleasure, she struggled desperately to answer. It was adorable.
Then the most important words suddenly came to me.
"Noona."
"Haang...?"
"I'm gonna come inside."
At that, Iseol noona's body jerked hard. She couldn't speak.
She just nodded frantically while letting out even more lewd moans.
Her pussy clamped down on me again, hard.
"Haaaang! I'm, I'm coming...!"
The moment she reached the peak of another orgasm, I couldn't hold back either.
"Coming...!"
I gripped her waist and began pouring hot cum into the deepest part of her pussy.
Thick pulses. More and more.
Even while ejaculating I never stopped moving my hips.
"Huuuh...!"
Mind-breaking pleasure.
Nothing I had ever felt in my life compared to this.
The more I ground my spurting cock inside her, the more the ecstasy multiplied.
I mercilessly slammed my hypersensitive cockhead against her soft inner flesh while still coming.
Everything was perfect. It felt like I had been born for this exact moment.
Even after I finished, I left my cock buried inside her for a long time.
Breathing hard, I savored every last aftershock of my first time.
-x-X-x-
The fierce afterglow of our first time had barely begun to fade when I flipped Iseol noona over onto her stomach.
The soft body that had just been nestled in my arms, panting hard, rolled over without resistance.
"Ah... uh?"
"Noona, you can go one more round, right?"
"W-wait-I just came...!"
Her voice mixed fluster with the lingering haze of pleasure as she called out to me.
Instead of answering, I seized her slender waist-slick with sweat-in both hands and held on tight.
The body that had just finished taking my load and drowning in the first orgasm of her life had no strength left to fight back.
Her pale, smooth back, the elegant curve of her spine, and that full, ripe ass were laid completely bare.
It was nothing like the missionary position where we had faced each other. This was pure female posture.
"Hnn..."
A weak, aching sound slipped from her lips-part exhaustion, part anticipation, and utterly lewd.
I pressed the cock that had just finished wrecking her walls back against her entrance.
The leftover heat, her juices, and the thick load I had poured into her all mixed together with a wet, filthy sound.
The moment I nudged the head against her, her pussy twitched and spilled even more slick.
- Schlick!
Taking her from behind was a whole different sensation.
I sank in to the root, and the places that rubbed against my cock were completely different from before.
Not being able to see her face only made my imagination run wilder.
And right in front of me were that pale, round ass and the tight little hole beneath it, drawing every bit of my focus.
"Haa... nn...! Ah...!"
Her shoulders trembled in fine little shivers.
I deliberately started moving my hips deeper and harder than before.
- Slap, slap, slap!
The wet smack of flesh on flesh rang out loud.
"Nngh, nngh...! S-Sihyuk...! It's too deep...!"
A raw, broken cry burst from her throat.
The sensation of my cock stabbing straight into the mouth of her womb left her unable to think straight.
I was just as lost.
Every time my thighs slammed into her ass, the thick flesh jiggled so satisfyingly, and her pussy clenched down like it was trying to milk me dry. It felt fucking incredible.
"Noona, use what they taught you at the Academy. Squeeze that pussy for me."
Even while struggling, she obeyed the dirty request and put her training to work.
"Hhk... like this...?"
Her walls pulsed and clamped hard around my cock.
"Oh...!"
The stimulation was insane. As a reward I jammed the head of my cock firmly against her cervix.
"Hh... uk!"
She buried her face in the pillow and clutched at the sheets.
Every thrust made her squeeze instinctively-exactly the way a proper Academy graduate should.
These were the techniques every woman learned over and over: how to please a man.
Her inner folds rippled and gripped me like they never wanted to let go.
So Chaerin's learning this stuff too, huh?
Every time noona tightened, my rock-hard cock slammed mercilessly deeper.
"Hic...! A-aahng!"
Before long her grip started to loosen.
Even a thoroughly trained female couldn't hold it together when a real cock was driving in so much deeper than missionary.
Watching techniques drilled in without a real cock collapse under pure pleasure filled me with raw conquest.
Her reactions were so cute I deliberately ground the head of my cock against her womb entrance again and again.
"Hyaa, ah! Sihyuk, wait-too deep...! Not there...!"
She begged, but I didn't stop.
I grabbed her pale shoulders, yanked her back onto me, and drove my cock home.
"Haaang! I-I'm coming...! Coming again...!"
I hadn't even thrust that many times before she screamed through another climax.
Her pussy convulsed violently, clamping and releasing around me in frantic waves.
The scorching heat inside her writhed like a living thing, trying to wring every last drop of pleasure from
my cock.
That insane grip pushed me right to the edge.
"Ugh...!"
There was no reason to hold back. I flooded her insides with another thick, hot load.
- Spurt, spurt!
"Hyaaa... hnnngh....!"
She nearly sobbed as she collapsed onto the bed.
Even after I finished cumming I stayed buried inside her for a long time, leaving my hot mark deep in her body.
Feeling her pussy twitch around me, I truly realized I had taken her.
I don't know how much time passed.
We lay side by side on the bed, both breathing hard.
The sheets were soaked with the evidence of our rough sex, and the thick scent of sweat and fluids filled the room.
Then something caught my eye.
A faint smear of blood on the white sheets. Proof that she had been a virgin.
The fact filled me with a strange mix of conquest and responsibility.
I had become Iseol noona's first man.
After staring at me for a long while, she carefully spoke. Her voice was a little hoarse.
"...Sihyuk."
"Yeah, noona."
"...How was it?"
"Huh?"
"Did I... do well?"
Her voice shrank with embarrassment.
It was the kind of question a man would normally ask, but here the woman was the one asking.
It was so fresh and adorable that a laugh slipped out of me before I could stop it.
"Pfft..."
"W-why are you laughing...! Was it that bad...?"
She looked up at me like she might cry any second.
That pure expression only made me laugh harder.
I shook my head and pulled her tightly into my arms. Her soft, warm body fit perfectly against me.
"No. It was amazing. Way better than anything I imagined."
At my honest answer her face lit up brightly.
"Really? Thank goodness..."
Watching her breathe out a sigh of pure relief made my cock start to swell again.
This woman I had taken by chance had endless charm.
After a brief hesitation she squirmed under the covers and reached for my cock.
"It's all dirty. I'll clean it for you."
She lowered her head and took me into her mouth.
Chuuup.
Her warm, soft tongue carefully licked every filthy inch of me clean.
"Hah..."
She kept at it for a long time, only lifting her head once she was satisfied I was spotless.
The slight sheen on her lips was unbearably erotic.
"I'll make sure to take the morning-after pill, so don't worry. I'm not going to make things inconvenient
for you..."
Only then did I realize I hadn't thought about contraception at all.
I had been so worked up I forgot the most important thing.
*Thanks, noona."
"Don't thank me... I did it because I wanted to."
She smiled shyly and pressed a light kiss to my cheek.
Right then the phone I had left in my pocket buzzed once.
Chaerin
Hey, where are you? Still not here yet?
A text from Chaerin.
"I should probably get going."
"Already...?"
Disappointment flickered across her face.
I wanted to fuck her more too, but a lot of time had already passed.
Swallowing the regret, I got up and started putting my clothes back on.
"Um, Sihyuk..."
Just as I was about to leave the room she called out urgently.
"Before you go... could you hold me just one more time?"
Her cheeks were red with embarrassment. I couldn't refuse.
I walked back over and gently wrapped my arms around her.
She buried her face against my chest and stayed completely still for a long while.
"See you tomorrow."
"Yeah... see you tomorrow, Sihyuk."
-x-X-x-
Late that night, Iseol sat on the sofa in her apartment living room, fingers flying over her laptop keyboard.
There was no trace left of the neat, gentle Academy instructor.
She wore only a stretched-out tank top and a single pair of panties. No bra-her nipples stood out clearly against the thin fabric.
Her usual soft expression was gone, replaced by something cold and blank.
On the screen, under the title "Kim Sihyuk Observation Report, a long entry was taking shape.
OFFICIAL DOCUMENT
Kim Sihyuk Observation Report
Target: Kim Sihyuk (ID: M-017)
Observation Notes: Sexual drive excessively high compared to average males. Does not reject sexual approaches from women; rather, shows a clear tendency to actively initiate relations.
No atypical avoidance behavior toward women observed to date. Additional data secured through direct physical contact (sexual intercourse) with the subject.
Strong tendency to seize the initiative during initial relationship formation. Appears linked to the subject's dominance drive and is estimated to correlate with preferred sexual positions.
Continuous observation and data collection planned.
Once she finished writing the report she encrypted the file and sent it.
In one corner of the document Sihyuk's ID photo was attached.
In the picture he was smiling with pure, unknowing innocence.
Iseol closed the laptop and stepped out onto the balcony.
With practiced ease she pulled out a cigarette, stuck it between her lips, and lit it with a Zippo.
A soft click, and a red flame blossomed.
White smoke drifted into the night air and scattered.
Her gaze stayed fixed on a window not far away.
The apartment where Sihyuk lived.
By now that boy is probably fucking his little sister.
The thought brought every sensation of their first sex flooding back through her body.
The hard, scorching heat that had driven into her deepest place. The rough breathing that had tickled her ear.
Her face burned hot.
She slid her fingers under her panties and began rubbing gently.
She had already forgotten she was on a mission. That place was soaked.
Kim Chaerin... I'm jealous. Getting to have a man like that every single night.
Hot heat rose from her lower belly.
Iseol crushed the cigarette out in the ashtray and went back inside to deal with her lust.
The door shut, and her soft moans melted faintly into the night sky.
-x-X-x-
Even after I left the school gates, Iseol noona's seductive scent still seemed to cling to the tip of my nose.
I joined the two girls waiting for me at the gate and smiled under the warm afternoon sunlight pouring down over us.
After sex, the world looked beautiful.
Despite how fiercely we had gone at it, my body wasn't tired in the slightest. My mind was as clear as the sunlight itself.
Am I the type who gets healthier from sex?
"You're late. What were you doing?"
Chaerin, walking pressed right up against my side, frowned and asked.
Subin only watched me with worried eyes from beside her.
"It was nothing."
I brushed it off casually.
Telling my twin sister and childhood friend that I had just had sex with our homeroom teacher felt a little much.
Once we left the academy grounds, the streets began to fill with life.
It was already past dismissal, so most of the university students had cleared out from around the academy. The people packing the streets now weren't academy girls but ordinary women.
I glanced around, looking for pretty faces, and suddenly realized-
...Everyone is ridiculously beautiful.
It was true.
The average looks of the women walking the streets were on a completely different level from the Earth I knew. There were a few ordinary faces mixed in, of course, but most of them had the kind of beauty you would believe if someone said they were magazine models.
Their figures were even more so.
Breasts the perfect size to grab, slim waists, and asses made for pounding overflowed on every sidewalk-proof of how carefully every one of them maintained themselves. Their clothes only amplified that beauty: tight dresses that hugged every curve, miniskirts that barely covered their thighs, tops cut deep enough to show cleavage.
By the standards of my previous life it would have looked vulgarly sexy, but here it was just ordinary streetwear.
Pretty women were the only ones who got to marry and have kids, so naturally only the pretty genes survived. Once I thought of it that way, this unrealistically arousing scenery made a little more sense.
There could only be one reason the women of this world dressed themselves this sexily.
To seduce men.
Thinking that made me suddenly conscious of the two girls walking beside me.
"So why do you two dress so plainly?"
Chaerin looked at me like I had lost my mind.
"What are you talking about? How is this plain?"
"Compared to the other girls, you're a little understated."
Chaerin and Subin's outfits were neat and proper. Their figures alone made them attractive enough, but next to the blatant exposure of the other women they looked modest.
"Why should I have to show my body off like the other girls?"
"Don't guys usually like that?"
"What does it matter if other guys like it?"
Chaerin turned her head away with a sulky snap. The way she did it looked exactly like a cat that only flicks its tail for its owner, and I couldn't help smiling.
"What about you, Subin?"
"I-I'm the same as Chaerin... There's just... no one I particularly want to show myself to..."
Subin's voice shrank into a mumble, but the meaning was clear enough. Both of them were thinking the same thing: there was no need to look good for any man who wasn't me.
Thinking of Subin brought back the word I had heard in the infirmary-HSDD. Subin seemed to have that condition.
I almost asked, but Chaerin was right there, so it felt awkward. From the way Subin had reacted during the physical exam, she clearly hated the fact that she had HSDD.
Before long we reached our familiar neighborhood and stopped in front of Subin's house.
"See you tomorrow, then."
"Yeah. Sihyuk, let's walk to school together again tomorrow."
Subin said it with a shy smile. I nodded, and she kept glancing back over her shoulder as she went inside, looking reluctant to leave.
The moment we stepped into the house, the familiar air wrapped around us.
I headed straight for the bathroom and showered. Washing away Iseol noona's scent and the smell of semen made the fact that it was just Chaerin and me again feel real.
When I came out, Chaerin was lying on the mattress staring straight at me. Her expression said she had something to say, but she didn't open her mouth first.
Come to think of it, earlier when we took the student ID photo she said she'd take care of my sexual processing at home.
I remembered her looking at my erection and promising to handle it once we got back. Even after two rounds of intense sex with Iseol noona, my cock was still rock-hard. I had no idea how the original owner of this body had been managing his libido. Had he met so many women that his phone never stopped ringing?
While I debated what kind of sexual processing to ask for, I lay down on the mattress beside Chaerin.
A blowjob? A handjob? Paizuri?
I glanced at her sideways.
"...What are you looking at?"
When our eyes met, Chaerin turned her back to me as if she was too embarrassed to face me. That left me with a perfect view of her from behind. She lay with her back to me, looking at her phone. The blanket was only draped lightly over her legs, so her figure was completely visible.
The dolphin shorts she had thrown on for comfort at home clung to the round curve of her ass. She must have pulled them up high, because the soft undercurve of her cheeks peeked out just enough to make me want to slide my hand inside.
I wanted to put my hand right there.
Having had sex a few times already, my thoughts had gotten a little bolder.
When I lifted my gaze, the thin white T-shirt clearly showed the pink shoulder straps of her bra.
I silently moved in behind her. Without hesitation I wrapped my arms around her from behind and filled both hands with her breasts.
"Ah...?"
Chaerin's shoulders flinched in surprise.
The breasts that filled my palms had a completely different feel from Iseol noona's. Where Iseol noona's breasts-kept firm by exercise-had a springy elasticity, Chaerin's were less bouncy but softer and more yielding. If someone asked me which I preferred, I wouldn't be able to answer. Both were top-tier tits I wanted to fondle every day.
"Sexual processing. Do it now."
My sudden whisper against her ear made her body jolt reflexively.
"...Hey. You can just say it normally. Why whisper it in my ear?"
She sounded annoyed, but I clearly saw her ears flush bright red. The way she desperately tried not to look happy was adorable.
"I'm too lazy to get up. Just do it with your hands while we lie here."
At that, Chaerin reluctantly turned back over to face me. The moment she saw my cock-already free of my underwear-she sucked in a sharp breath. It had been hard ever since I started groping her chest, twitching as if it wanted to bury itself in a pussy right that second.
"...It's still huge no matter how many times I look."
Chaerin muttered under her breath. She reached out with both hands and carefully wrapped them around my cock. Lying down limited how freely she could move her arms, so her handjob looked clumsy and beginner-like all over again. Still, it was insanely hot knowing it was my pretty twin sister's hands and not my own.
While she stroked me, I slipped my hand under her top. I deliberately dragged my palm slowly up her soft skin. I didn't stop there-l slid under her bra and filled my hand with her pliant breast, then flicked the swollen nipple with my fingertip.
"Hey, why are you touching my nipples again?"
I pinched.
"Nnh..."
A moan slipped from her lips.
"Have your breasts always been this sensitive?"
"I'm not sensitive, okay?! I'm the same as everyone else..!"
"Hmm, really? Then how do you masturbate? With your chest? Or with your pussy?"
"Why would you ask something like that, you pervert!"
"I heard about estrus sickness at the infirmary. You get it if you don't masturbate, right?"
"..."
"During the physical today-did a lot of love juice come out?"
My relentless, explicit questions left Chaerin answering in a mix of moans and irritated snaps.
"Barely any came out...!"
Barely any, my ass. My hand had gotten soaked earlier.
I smiled, finding her cute, and stimulated her nipples harder. The dirty talk heated the atmosphere further.
"Hnn... ah! Ahn!"
Every time I flicked her nipples her hips jerked, and she couldn't hold out long-she bit her lip hard. While still giving me a handjob, Chaerin buried half her face in the pillow and came for the first time.
"Hnnn...."
The way she hid her face in the pillow because she was embarrassed to meet my eyes while climaxing was so lovable.
But I still hadn't finished.
"Keep going."
My calm order made Chaerin, still panting from her orgasm, grab my cock again. She started moving her hand, already slick with precum. I kept fondling her breasts the whole time. When I pinched and tugged on her thoroughly swollen nipples she let out a sharp "Hiiik...!"
Only after Chaerin came a second time, violently, did I finally lose control and spill my load.
Spurt! Spurt!
"Ah...!"
Chaerin snapped back to her senses too late and tried to cover the head of my cock with her palm. There was simply too much semen, and because we were lying down it splattered all over her clothes. as well.
A moment later her slender white fingers brushed over my urethra, carefully wiping away every last drop.
Still, ending it like this felt a little unsatisfying.
I could give Chaerin some sexual processing too, couldn't I?
-x-X-x-
Chaerin, both hands sticky with my cum, tried to rise from the mattress with a flushed face.
She was probably heading for the bathroom to rinse the semen off.
But I still wanted to finger her pussy, so before she could get up I caught her wrist and laid her back down.
"Wait."
"Why?"
"It's not over yet."
"What isn't?"
Chaerin glanced down at my cock with a look that clearly said, Don't tell me you want more sexual processing already?
"Thinking about it, it's unfair if only I get sexual processing."
I spoke while looking straight into her eyes.
"This time I'll give you sexual processing."
The moment the words left my mouth I cupped her face in both hands and kissed her.
This was the first kiss between me and my twin little sister.
"Mmph...!?"
Chaerin's eyes flew wide in disbelief.
I felt her soft, plump lips stiffen with shock.
As if she had forgotten how to breathe, she surrendered her body to me like a doll.
Her flustered pupils trembled.
If not for the cum still coating her hands, it would have been a thrilling scene straight out of a romance movie.
She tried to speak, but every time she opened her mouth mine sealed it again.
"Mmph, chuu, hey, wait, haah, smooch...."
I wasn't especially skilled at kissing either.
But the sensation of the heated kiss I had shared earlier today with my homeroom teacher, Iseol-noona, was still vivid on the tip of my tongue.
Recalling that memory, I gently rubbed the tip of my tongue between Chaerin's tightly closed lips.
When I licked upward as if lightly tickling her, the strength drained from her shoulders.
A tiny gap formed between her lips.
I didn't miss the chance and pushed my tongue inside.
"Nngh chuu, kiss... it's my first time... mmm, churu...."
While our tongues tangled, Chaerin's mouth-shy because it was her first-tasted sweetly of strawberries.
When I carefully swept the soft flesh inside with my tongue, she twisted her waist.
A helpless little gesture against the foreign sensation she was feeling for the first time.
But she never pushed me away; she clearly didn't dislike my tongue.
So I found her small tongue and wrapped it with mine.
Her tongue kept wriggling as if the contact felt awkward, yet I refused to let go and intertwined them thoroughly.
My hands had already drifted back to her breasts.
No man could look at Chaerin's F-cup tits and not get hard.
When I put strength into my fingers, the soft mounds of flesh kneaded at my whim just as they had before.
"Nngh...."
With her lips sealed, a faint moan slipped from her throat.
Kissing and breast play at once. The double stimulation seemed to be scrambling her thoughts.
Wearing a satisfied smile, I slowly slid the right hand that had been kneading her chest downward.
Past her smooth waist I stroked the slender line of her hips.
The lower my hand traveled, the more lewdly her thighs rubbed against each other.
When my hand finally slipped inside her pants and panties, that sexy body flinched hard once more.
I paid no attention and pushed deeper.
The warm heat inside her panties transferred straight to my palm.
"Chuu, hoob, there...!"
It was incredible.
Her panties were already past damp-they were soaked through.
Sticky love juices coated my fingers thickly.
And beneath that, the soft feel of neatly trimmed short hair.
Of course I didn't hesitate; I slid a finger into her pussy.
When I carefully pushed inside, hot, soft flesh wrapped around me.
It was tight.
Moreover the walls writhed like a living creature and squeezed my finger.
If I ever had sex with a pussy like this I wouldn't last three minutes before cumming.
-Squelch!
The sound was louder than I expected.
The wet, explicit noise of a finger being shoved into a tight, dripping place.
With only the two of us in the room it rang out especially clear.
I felt precum surge up from my own cock.
Chaerin hastily tore her lips from mine and panted as she spoke.
"H-ha, don't... Sihyuk...."
Despite the words, anyone could see she wanted me to keep going.
Her voice thick with heat was so sweet I wanted to kiss her just from hearing it, and her face burned red as if she had a fever.
Her eyes were steeped in anticipation.
I grinned and stole her lips again.
This time the kiss was far deeper and thicker.
While my tongue ravaged the inside of her mouth, the finger below began stirring her pussy in earnest.
At first, unsure what would work best, I only inserted shallowly and wiggled.
But matching the flinching reactions of her body I gradually changed my movements.
The finger that had been poking aimlessly began rubbing the vaginal walls as if tracing them with my fingerprint.
"Heup... nngh...!"
-Squelch squelch squelch
The wet sounds never stopped.
I wanted to find her most sensitive spot.
So I bent my finger and slowly scraped upward along the inner wall.
All the while I never broke the kiss, diligently locking eyes with her and moving my tongue.
Her hands still sticky with cum, Chaerin could neither grab me nor clutch the mattress; only her thighs trembled.
Not long after I started probing for her weak points the reaction arrived.
"Heut, there, there...!"
Found it. This was the spot.
I pressed hard with my fingertip so I wouldn't forget it.
Her breathing grew even rougher.
I gently rubbed in slow circles centered on that place.
But something felt off.
When I pulled out a little and gently rubbed the lower wall instead, she twisted even harder.
"Ah, ang...! There feels weird too..."
What? Two weak spots? Curious, I tried other places as well.
This time the left side.
"Hiiik! W-wait, if you do it like that...!"
Her body began trembling as if it had lost all control.
It wasn't that one place was especially weak. Her entire pussy was a mass of erogenous zones.
Wherever my finger touched, Chaerin reacted with raw sensitivity.
As climax approached her legs clamped shut.
They squeezed my finger and began shaking violently.
I didn't stop. If anything I moved faster, deeper.
From the overwhelming orgasm her hips instinctively tried to pull back a little. Of course that wasn't nearly enough to escape my finger.
Seeing her squeeze her eyes shut and push her face forward, hungry for more of my kisses, only made me finger her pussy even more enthusiastically.
"Ah, euk! Haaung...! I-I'm cumming...!"
The climax moan burst out between the lips we were still kissing.
Her body stiffened as if turning to stone, then immediately convulsed with violent spasms.
The force of her walls clamping down on my finger became tremendous.
-Pshuut, pyutsuutsu!
At the same time hot love juices spurted like a fountain, soaking my hand and thighs.
The mattress got so thoroughly drenched that all of Chaerin's earlier efforts to keep cum off it became meaningless.
Even while climaxing she never pulled her lips away from mine.
Did she like kissing me that much?
I waited until her body calmed, then slowly broke the kiss.
Chaerin looked up at me with moist eyes, gasping for breath.
Someone once compared a woman's orgasm to waves; her face still looked like she hadn't fully come out of them yet.
Even after cumming twice today and just receiving sexual processing, my cock was still throbbing vigorously.
Only after a long while did she recover her senses. Seeing her pants and the mattress soaked with love juices, and her own hands still coated in cum, she hung her head low
She must have been terribly embarrassed; without a single word she leapt up from the bed as if fleeing and bolted for the bathroom.
"Hoo..."
Left alone in the room I let out a satisfied sigh.
Judging by that reaction, it seemed I could have sex with Chaerin whenever I wanted.
If I propositioned her tonight she wouldn't refuse. She'd probably act annoyed while spreading her legs for me.
I'd already done it with my homeroom teacher; there was no reason not to fuck my twin little sister either. Chaerin seemed to like me too.
Chaerin, Subin, the vice class president Cha Ayeong, and the countless classmates who already showed me blatant interest...
Couldn't I fuck every last one of them if I just put my mind to it?
Just thinking about it made my lower body heavy. This world was without a doubt a paradise for a man with a libido like mine.
Still lost in pleasant fantasies, I stood up.
While Chaerin washed I looked around the room for something to do, and an old bookshelf in the corner caught my eye.
An album and a fairly thick diary on the bottom shelf drew my attention.
Come to think of it, I knew almost nothing about this body's-Kim Sihyuk's-past.
How his parents had died, what his childhood had been like.
I'd heard the rough version from Chaerin, but I wanted to see it with my own eyes.
When I pulled the album and diary free they were clean, without a speck of dust.
Maybe after the original owner of this body got into the traffic accident, Chaerin had looked through them out of longing.
Imagining her flipping through these because her twin oppa had been in an accident made my chest ache a little for her.
I took the album and diary and started toward the dining chair.
That was when it happened.
Thud.
A thin sheet of paper slipped out from between the pages of the diary I held in my left hand and fluttered to the floor.
What?
Without thinking I bent down to pick it up-and before I could stop myself I read the sharply scribbled writing across it.
It is not amnesia.
The handwriting was rushed, scrawled as if dashed off in a hurry.
Even the final sentence broke off unfinished.
It was a thoroughly unsettling scrap of writing.
My body and mind, still burning from the first kiss and caresses with Chaerin only moments before, cooled in an instant. The thin sheet of paper in my hand felt heavy as lead. The contents were far too loaded with meaning to dismiss as some random scrap that had simply gotten stuck inside.
This is no ordinary amnesia.
I must remember.
That meant the original owner of this body had expected to lose his memories. But a traffic accident was not something anyone could predict. I was caught up in some strange conspiracy-I was sure of it. A sinister premonition crawled down my spine: this might not be a simple possession into a gender-reversed world after all.
The moment the sound of Chaerin washing her hands in the bathroom stopped, I hastily stuffed the paper into my pocket. Then, until dinner, I searched every corner of the house while dodging her eyes. I found neither another memo of the same sort nor a single suspicious object.
Even seated across from her at the dinner table, the food would not go down. Chaerin asked if something was wrong, but I simply claimed I was tired. My mind tangled itself into knots of competing hypotheses.
First: intentional personality replacement. The possibility that the original owner, crushed by extreme stress or trauma, had wanted a new life and tried to swap his personality for "mine." But the memo's contents flatly contradicted that. "I must remember' meant he had never wanted amnesia. It could not have been something he chose.
Second: the subject of some secret experiment. The possibility that, without my knowledge, I had become a test subject of the government or some vast organization and had been deliberately injected with the memories of another "me." Yet I could see no reason for such a thing. The original owner seemed to have been doing nothing more remarkable than ordinary male prostitution...
Third: a supernatural phenomenon. Straight possession. And the original owner had somehow realized it and left the memo. That, too, was possible. But how the original owner could have recognized possession and prepared countermeasures remained a mystery.
Fourth: virtual reality. The possibility that everything was part of an elaborately constructed simulation. Yet Chaerin's body heat under my hands, the taste of food, even sexual pleasure-everything was far too vivid. The sense of reality was too overwhelming to believe it was all fake.
Last: multiple personalities. The possibility that extreme trauma had caused my brain to suppress past memories and identity, fabricating a new self called "the possessed me.' The memo could be a trace left by the suppressed original self. But this, too, felt wrong. My past-life memories were far too vast and precise-the reversed gender roles of society, an entirely different history and culture, even relations with other nations. My previous life was far too consistent and systematic to be a delusion spun by one traumatized mind.
Damn it. I don't understand a single thing.
My head felt ready to burst. No hypothesis fit cleanly. Still, I could not help leaning toward the "possession" theory. My past-life memories were simply too detailed and clear-my name, the place I grew up, my trauma, the foods I used to eat. I could not believe those memories had been manufactured.
"Haa..."
A deep sigh escaped on its own. I wanted to believe my life was real, that this body was now mine. Above all, I refused to think of myself as fake.
"Hey, is something really going on with you?"
Chaerin, finished with the dishes, stood in front of me and asked with a worried face. I shook my head and said it was nothing.
In that moment I realized: perhaps even Chaerin standing right before me, or my childhood friend Subin living next door, might need to be treated with caution. I could not rule out the chance that the two people closest to me were involved in everything. Until I knew who had done this and for what purpose, I would have to watch myself. Sex, women-l might have to keep my distance for a while. I resolved to do exactly that.
But the resolve crumbled the instant I saw Chaerin's back; my cock hardened at once. Fresh from housework, she wore loose gray slacks and a white short-sleeve T-shirt. To her they were simply comfortable clothes, yet the sight ignited my lust. The slacks hung loose, but every time she bent to organize the cabinet under the sink they clung to her ass and revealed its full shape. Through the thin fabric the white panty line showed clearly. I swallowed hard without meaning to. My cock swelled even larger. I used to stare whenever big-assed girls walked past dressed like that-yet here she was wearing the same thing at home.
I'm going crazy, seriously...
Honestly, I wanted to bury my cock between those plump cheeks. When Chaerin squatted and pushed her ass out a little, I reached full, painful erection. Thin waist, wide hips-the urge to take her from behind refused to leave my head. Those soft, full ass cheeks would act as perfect shock absorbers; the fucking would feel incredible. It was so arousing I half-believed she was deliberately seducing me. Now that I had tasted sex, my already vigorous desire only grew without limit. The thought of tsundere Chaerin, who usually snapped and nagged, moaning on my cock kept me rock-hard.
While reason and instinct waged war inside my skull, time flowed on indifferently. In the end, having solved nothing, I sat at the dining table and opened the diary I had brought earlier. The only thing I could do was hunt for more clues about this body's past.
The diary began around age five. The crooked handwriting mostly recorded trivial daily life. One story appeared with striking frequency.
Childhood Entry
Today I went to the village gathering. The adults talked about boring things, and I played hide-and-seek with Jjokkom and Chaerin. I was it, but both hid so well that I searched for a long time.
Jjokkom?
A nickname I had never seen before. From context it clearly referred to a childhood friend. I guessed this 'Jjokkom' was Subin's nickname from those days. Most of the diary was filled with stories of playing with Jjokkom and Chaerin at that village gathering. The entries continued for roughly a year, then stopped cold.
While I turned the pages one by one, Chaerin finished the housework and came to stand beside me.
"Why are you reading that?"
"I thought I might recall some memories."
At my answer her brows furrowed in a subtle frown-clear dislike.
Until recently I would have dismissed it as the cute jealousy of a tsundere desperate to devour her amnesiac twin brother. Now every flicker of expression looked suspicious. Did Chaerin not want me to regain my memories? Was she behind everything? Suspicions chained one after another until I barely managed to snap myself out of it. Before I knew it my gaze had locked onto the cleavage of Chaerin as she bent over the diary. The neckline of her pink apron and white T-shirt sagged with gravity, offering a perfect view of the valley between her breasts. I exhaled a deep sigh at my own uncontrollable lust.
"What's this village gathering?"
I asked, forcibly dragging my eyes away. Chaerin frowned again.
"It's like a cult."
"A cult?"
"Yeah. Some weird religious group that tried to turn men into women's slaves-brainwashing, magic, whatever it took."
Her explanation hit like a blow. A cult that wanted to enslave men. Had they done something to me...?
"We thought it was just a normal village gathering. Before they showed their true colors, we moved here with Subin's family. Lucky break, right?"
"What happened to that cult? Where are they now?"
"Last year, I think? News came out that the cult leader couple got caught trying to kidnap a man and were executed."
Chaerin let out a genuine sigh of relief.
"If we hadn't moved then, you might have been in danger too."
I felt real concern for me in her voice, and my suspicion of Chaerin eased-just a little. I sorted the facts in my head. A cult that sought to make men into slaves. The leader couple executed last year. Had I been their final test subject? Had those cultists somehow caused the possession? Just as my thoughts began to tangle again, Chaerin's gaze dropped to my lower body.
"..."
I looked down. My cock stood rigid, straining as if ready to tear through my pants. It had begun swelling the moment I saw her ass and had never subsided through the entire conversation. Chaerin's face flushed scarlet. To hide the embarrassment she fell back on her usual sniping tone.
"Ahem. Ahem. My mattress got soaked earlier because of you... I don't think I can sleep on it tonight."
True enough-my caresses earlier had left the mattress wet with her juices.
"Oh. So?"
"...Can I sleep on the same mattress as you?"
The instant the words left her mouth, reason and instinct clashed inside my skull. Reason warned, Dangerous. Nothing is certain yet. Keep your distance. Instinct whispered, Yeah. Of course.
"Yeah. Of course."
My mouth answered before I could even think. This was no battle between reason and instinct-just a total slaughter by instinct. Only after the words were out did I realize I had lost to lust again.
"Okay!"
Chaerin spun around with a bright smile. An ominous premonition settled over me: the feeling that I would not be able to control my desire.
-x-X-x-
The night I spent sharing a single mattress with Chaerin was pure torment.
The mattress was far too narrow for a grown man and a grown woman to lie on together. Every time either of us shifted, our shoulders or backs brushed against each other, and each contact flooded my nerves with the soft give of her skin and the faint scent of her body.
It was the first time in my life I had ever slept in the same bed as a woman. No matter how hard I tried not to get worked up, my body reacted on its own. My cock refused to settle down, stirred endlessly by the constant brush of her flesh. I had to stay rigid, practically mummified, so I wouldn't thrash around and wake her. Only toward dawn did I finally slip into a shallow sleep.
Then a soft, yielding weight pressed against my arm, and sleep slowly peeled away. I turned my head just enough to see Chaerin clinging to me like a pillow, breathing in quiet, even little puffs. There wasn't a trace of wariness on her sleeping face. Soft breaths escaped her small nose, and every time they brushed my bare skin, a warm contentment spread through me.
So a pretty woman could make a man happy with nothing more than her breath.
What ruined that perfect moment was my cock, which had decided morning was the perfect time to stand at full attention.
Damn it...
This body really was hopelessly obsessed with women. I stayed completely still so Chaerin wouldn't wake, simply soaking in her warmth. A woman's body could be this warm. While I lay there thinking that, her eyelashes soon fluttered.
"Mmm..."
She made a soft, catlike sound as she stirred, then slowly opened her eyes. The moment she realized she was nestled in my arms, she jerked back in alarm. I kept my eyes closed, pretending to sleep while I secretly enjoyed her flustered reaction. For a while there was the soft rustle of movement, then silence. A careful, catlike presence crept closer.
And then-
Chup.
Something soft brushed lightly against my cheek and pulled away. I almost snapped my eyes open in surprise, but managed to hold still.
"Heh... Secret morning kiss successful again today."
Her pure, clear little laugh brushed my ear. Then came the careful sounds of her leaving the room. I sat bolt upright. The lingering sensation of Chaerin's lips still seemed to burn on my cheek.
After she finished her shower, a savory smell began drifting from the kitchen. I stepped out to eat breakfast.
"Why'd you sleep in so late?"
Chaerin tossed out the mild scolding as if the kiss had never happened. Having been kissed first thing in the morning left me awkward; I couldn't quite meet her eyes. On the table sat steaming white rice, kimchi stew, freshly fried eggs, and pink sausages-dishes prepared with a care I could never have imagined in my previous life.
"Thanks for the meal."
"Don't leave anything."
It was a flawless breakfast. I finished one bowl and went back for a second. Watching me eat so heartily made Chaerin beam like a mother whose child had a good appetite.
After breakfast we headed to the academy with Subin. I reaffirmed the resolve I'd made the night before: until I uncovered the truth behind that note, I would keep my head down. No sex. No women. At least for a little while.
That resolve started to crack before the academy gates were even in sight.
"Whoa..."
The word slipped out of me unbidden. The road to school was a parade of pure female display.
Latex bodysuits were the mild end of the spectrum. There were sheer blouses that left almost nothing to the imagination, and outfits that bared half a chest while only just covering the nipples. The clothes the female students wore on their way to class went past sexy and into the realm of art.
One woman walking some distance ahead of us caught my eye completely. She had the air of an upperclassman, mature and composed, and a black, catlike tail swayed at her hips. No way... I doubted my own eyes, but the tail wasn't sewn onto her clothes. Every time she took a step, the base of it twitched beneath her tight skirt. It was an anal plug. She was walking to school with a plug seated in her ass as if it were the most natural thing in the world-and she had four of those tails.
-x-X-x-
The shocks didn't stop there. Off to one side, a male student strolled along as if walking dogs, four female students on leashes. The women crawled after him on all fours without a shred of shame, pads strapped to their elbows and knees so they wouldn't scrape the ground.
This world was insane. I had nothing left to say.
Then I spotted other women leaning against the academy wall, bodies trembling. Their faces were flushed with pleasure; muffled moans slipped from their lips as they tried to hold them back.
"What's that about?"
"Probably... their master ordered them to come with vibrators in their pussies," Subin explained in a small voice.
I couldn't stop marveling. This world was twisted far beyond anything I had imagined-and the fact of it excited me enough to push the anxiety over the note to the back of my mind for a while.
Inside the academy, a sign directed every student to assemble in the auditorium.
"It's all-school education day," Chaerin muttered.
The auditorium where yesterday's entrance ceremony had been held was still imposingly vast, larger and more magnificent than most concert halls. As first-years we sat in the front rows; the second- and third-years filled the seats behind us. On the second floor a balcony-like overhang held the teachers looking down on the students.
A short while later a woman stepped onto the stage. It was Choi Ara, the academy's chairman, the same woman I had seen at the entrance ceremony. Long silver hair that gleamed, beauty so striking it was impossible to guess her age, and a charisma that dominated the room. The moment she appeared, the noisy auditorium fell silent.
"Students, good morning."
Her voice was soft yet powerful as it rolled through the hall over the microphone.
"Today's all-school education comes before the practical physical training you will soon begin. It is a time to establish the fundamental mindset and philosophy that every woman who serves a man must possess."
"The goal of this education is to empty each of you of every unnecessary thought and plant in its place a single purpose: service to men."
Behind her, the three words that formed the academy's emblem- Devotion, Obedience, Sacrifice -were inscribed in gold leaf across the front wall.
"You are the most blessed beings in this world. Every woman born into it is given one sacred calling: to offer herself to her husband."
Choi Ara brought up a graph on the auditorium wall showing a male-to-female ratio of 1:20.
"Look at this imbalance. Do you not see our role? Every woman must become a living shield and cradle that protects men."
"Everything you will learn from now on points toward this single goal. Your knowledge, your skills, your bodies, even your hearts-all of it will be reborn as tools for a man's peace and satisfaction."
She poured out these staggering words without a hint of shame. Hearing that women should become slaves to men left me, a man, feeling strangely unsettled. I had been taught that all humans were equal. In a world where the sex ratio had been shattered, however, equality seemed to be a luxury.
"Obedience is the greatest act a woman can perform."
The chairman began explaining the academy's three great principles-unbreakable rules every female student was never to forget until graduation.
"First: A man's judgment is right in most cases."
"Second: Your desires are not your own."
"Third: Act before a man even speaks."
I watched the scene in silence. This went beyond education; it was pure indoctrination. Looking around, I saw that many of the female students including Chaerin and Subin-were completely captivated by her words. Their eyes shone with respect and awe.
Only then did I begin to grasp something. I was finally starting to understand what the carefully planned and executed "Marriage Academy truly meant to this country.
Humanity here was thrashing in desperation.
In the face of an extreme 1:20 sex ratio, this was a desperate struggle to keep the human species alive. They would turn the majority of humanity-women-into men's slaves if that was what it took to maintain the population. They had made the academy's education into 'common sense."
I alone was a stranger in this vast vortex of madness.
-x-X-x-
Once the assembly in the auditorium ended, we returned to the classroom.
Seol-noona stood at the front of the desk and addressed the girls still flushed from the chairman's speech moments earlier.
"The chairman's lessons are regularly scheduled for first period every Monday, but this week they were moved to today-Tuesday-because of the entrance ceremony. None of you must ever forget the mindset a woman is supposed to carry."
Her voice was soft, yet it carried an unmistakable firmness.
"Starting today, sex education will run through fourth period, right up until lunch. After lunch, from fifth period on, you'll move to the major lecture rooms you've been assigned to."
And so first period began-a review of the mindset training we had just heard. Seol-noona expanded on the chairman's speech with detailed examples. In short, she hammered home once more the devotion and obedience every woman was expected to cultivate.
Unlike the other girls, who diligently took notes, I listened with a blank expression. I had already decided this was brainwashing and had no intention of absorbing more of it. More importantly, as a man, I had no reason to sit through it at all.
Second period was sexual-violence prevention education. The content, however, was the exact opposite of everything I had known.
The sole purpose of the lesson was to prevent women from committing sexual violence against men. It was a complete reversal of the life I had lived before, when men were the ones told never to commit such acts.
"As you all know, a man's body is extremely precious," Seol-noona said with a serious face. "Most men do not enjoy the sexual act itself; in fact, many of them experience pain during intercourse. The reason they still join their bodies with us women is solely out of the noble sense of responsibility for the continuation of humanity. A woman must never force that sacred act simply to satisfy her own base desires. Remember this well: any physical contact that goes against a man's will is treated as a serious felony."
The screen listed actions a woman must never take toward a man, along with the corresponding punishments-forcing sexual relief on a man who had refused, touching a man's body without permission, saying things that might make him uncomfortable, and so on. The severity of the penalties was almost unimaginable.
Third period shifted to male psychology. Seol-noona's voice grew even gentler as she began to explain.
"Marriage is a sacred contract between a man and a woman. And the most important fruit of that contract is a child. But there is one mistake you must never make before marriage: a secret pregnancy."
At the words "secret pregnancy," a few soft gasps escaped from the girls.
"Of course, wanting the child of a man you love is a natural instinct. But a man does not like it when a woman who is not his wife carries his child. So if he does not wish it, you must take contraceptive pills without fail and put his mind at ease."
Cha Ayeong, the vice-president sitting diligently at the back, raised her hand and asked a question.
"Once you're married, aren't you required to have children no matter what?"
"That's an excellent question. Seol-noona smiled as she answered. "By law, a man is obligated to marry at least five women. And each wife, unless there is a special medical reason, is obligated to bear at least one of her husband's children. Of course, the greater a man's love for humanity and sense of responsibility, the more wives and households he can maintain. For example, here in Korea, Mr. Lee Hyukjin holds the record with three hundred ninety-two wives."
I clicked my tongue inwardly. Three hundred ninety-two-even if he took turns every single day, a year wouldn't be enough.
"Most men prefer to build their household by taking wives who each offer different kinds of value." Seol-noona brought up four types of wives on the screen.
"First is the 'breeding-type wife. She carries the most important role of producing healthy heirs to continue the family line. Young, physically robust women free of hereditary disease are preferred. In some cases she even bears the children the other wives are supposed to produce."
In our class, the athletic Yeji immediately sprang to mind.
"Second is the 'financial-type wife. She directly increases her husband's wealth and power. Professional women such as doctors or lawyers, outstanding entrepreneurs, or women from renowned families fall into this category. Because they grow the family's fortune and elevate their husband's social standing, they are valued even if they are a little older or their looks are somewhat lacking."
Marrying a pretty rich woman wasn't that something everyone wanted?
"Third is the 'homemaker-type wife' She takes charge of every large and small household matter in a big family and mediates conflicts among the other wives, preserving order in the home."
Chaerin would probably make a perfect homemaker-type wife. She already did all the housework by herself every day.
"And finally, the 'pleasure-type wife. This type is a little special. Not only does she satisfy her husband's sexual needs, she also serves as a kind of instructor responsible for the sexual life of the entire household. Graduates who earned the highest practical scores at the academy usually take on this role, and they even train the other wives in techniques for pleasing a man.'
It was such a well-designed system that I almost whistled. In a world where harems were the norm, even the harem itself came with carefully defined roles.
"So even after marriage, is it all right to keep taking the pill?" Cha Ayeong asked again.
"Until every wife has given birth to one child, a husband's contraception is forbidden. If a wife fails to become pregnant within a certain period after marriage, the state investigates matters related to contraception. And men themselves do not want contraception once they are married. Everyone regards a large family as the ideal. Even men who do not enjoy sex put in great effort after marriage to impregnate their wives for the sake of building a harmonious big family."
In other words, for men who disliked sex, the only reason to have it was pregnancy. That finally explained why the state did not actively block contraception. Men in this world simply did not have sex if they intended to use contraception; they had no interest in the act itself.
The fact that I had thought about the pill while sleeping with Seol-noona made me something of an outlier. And it was obvious that the government had, for a very long time, steadily brainwashed society with the idea that "a large family is the symbol of happiness" in order to increase the population. Movies, dramas, plays-every medium must have been filled with the message that more children equal more happiness. So men came to envy big families and, after marriage, worked hard at sex.
Calling it brainwashing might sound strong, but it was not so different from the posters encouraging multiple children that governments in my previous life had distributed. This world had simply been doing the same thing for far longer, more consistently, and more naturally-long enough to create an academy university like this one.
"Of course, having a child through a sperm bank without marrying is also a noble act. In fact, most women give birth alone that way. Thanks to them, our country's population does not decline. Still, nothing is more glorious than serving a husband directly and building a household with him."
Third period ended and fourth period began. Seol-noona's voice brightened still further.
"All right, this is the time you've all been waiting for. Fourth period is Kegel-exercise practice."
She launched into an enthusiastic explanation of how important Kegel exercises were for a woman's body and how much pleasure they could give a man. In simple terms, Kegels were the act of tensing and relaxing the muscles around the hips; the result was a more sensitive pussy that felt more and clamped tighter.
"To maximize the effect of the exercises, we need to measure your muscle movements precisely. So we'll be using the smart Kegel devices that were listed among the entrance supplies."
She held up two thin metal rods. One was a little shorter, the other longer; both were no thicker than a piece of string.
"The long rod goes into the pussy, the short one into the anus. They measure the contraction and relaxation of the muscles during the exercise. Everyone brought theirs, right?"
The moment Seol-noona finished speaking, the girls in the class stood up as if it were nothing and began peeling off their pants and panties.
Even with me-a man-watching, they showed almost no embarrassment. If anything, they looked proud, as though this were a chance to display the bodies they had carefully cultivated. Only Subin and a few of the more reserved girls blushed and hesitated. In the blink of an eye the classroom was filled with more than twenty half-naked women, bare from the waist down.
Smooth white thighs, pussies of every shape and color. The sight made my cock twitch. Each girl smeared something gel-like onto her device and prepared to push the cold metal into her holes. The whole scene felt so unreal I could barely process it.
Unable to hold back the desire surging through me, I glanced at Chaerin beside me, who was still rummaging through her bag. Unfortunately, she still had her panties on.
"What's wrong?"
"I forgot the gel for the Kegel device..." she whispered softly.
"What are you going to do without gel?"
"They're thin, so I'll just put them in."
The devices really were thin enough that it probably wouldn't be a problem, yet Chaerin looked a little uneasy. Was it because of her undeveloped anus?
Then a brilliant idea struck me. What if we used her love juices instead of gel? Just like yesterday, I could finger her pussy thoroughly until it gushed, then use the slick fluid as a substitute lubricant.
"If it's hard to get them in, want me to help?" I asked, already picturing the pussy that would soon be dripping with juices under my touch.
At my suggestion, Chaerin thought for a moment before nodding.
"Okay. Help me. But how are you going to help? Do you have lube?"
She asked in a small voice. I answered casually and gestured her closer.
"No, I don't. Come right here."
Crazy bastard. You're a real crazy bastard.
I smiled on the outside while cursing myself inwardly. It was only yesterday that I had resolved to keep a low profile after seeing that ominous note. And yet here I was, in the middle of a classroom with over twenty female college students and our homeroom teacher watching, contemplating sticking my fingers into my twin sister's pussy. Reason screamed at me to stop, but instinct raced straight toward pleasure. And as always, instinct won.
Chaerin stood before me, her lower body completely bare without even underwear. The wariness and fear from last night flew far away.
"Could you stick your ass out a bit?"
At my request, Chaerin thought it strange but obediently moved. She turned around and presented her hips toward me.
The sight unfolding before my eyes was far more intense than the note. Her fair, round ass. The precious places visible between those cheeks. Her neatly trimmed pussy and, above it, the tightly closed little rear hole. That bitch-like rear view was more than enough to make my cock rock hard.
At first the other girls paid us little attention as they worked on inserting their own devices. But the moment I reached between Chaerin's legs and touched her pussy, the classroom fell silent in an instant. Dozens of hot gazes focused solely on the two of us. Those stares mixed curiosity with envy and jealousy toward Chaerin being touched by a man-and pure lust.
Chaerin seemed conscious of those eyes too and grew quiet. But the instant my finger brushed her pussy, her body flinched and trembled; I could feel every nerve concentrating on my fingertips.
"Hey...! What are you doing!"
Chaerin cried out softly in panic. At that voice the stares in the classroom grew even more blatant. I could even feel the gaze of Seol noona standing at the teacher's desk. I spoke casually-rather, in a low voice meant for everyone to hear.
"If there's no lube, you can just use love juices instead to put it in, right?"
At my words, soft gasps of admiration rose around the room along with the sound of several women swallowing. Chaerin's face turned bright red and she couldn't manage a single reply. Seated in my chair, I made standing Chaerin spread her legs a little wider. She obediently parted her thighs so I could touch her more easily. The way she did it felt strangely like a dog naturally lifting its chin when its master reaches out a hand.
"Why... in front of everyone like this...."
Chaerin grumbled, yet she never pushed my hand away. When my finger first touched her, her pussy felt a little dry. But as I began gently stroking her labia, it grew moist in no time, as if the dryness had been a lie. After only a few strokes, clear, transparent love juices welled up and made my finger slippery. I slowly pushed one finger inside.
"Hnn...."
A thin moan escaped her lips. I moved it just a little.
-squish
"Haaang...."
Even more juices flowed out, making wet sounds. In the deathly quiet classroom that sound and Chaerin's lewd moan rang out especially loud. Overcome by the intense pleasure, she gripped the desk in front of her as if desperate for something to hold. Satisfied, I pulled my hand free and thoroughly coated the smart Kegel device with her abundant juices, then pushed the device into her pussy. The thin, slippery metal rod was smoothly sucked inside.
"Hnn!"
Her body flinched hard; love juices trickled down between her legs and dripped onto the floor. Next I brought the other device to her anus. Because the entrance was far tighter and more sensitive than her pussy, her body jerked even more violently. With everything in place, Chaerin sat back down, face flushed scarlet.
I smiled with satisfaction and turned my gaze to Subin, who had been staring blankly at us.
"Subin, you didn't bring lube either?"
"Huh? Uh, uh...."
Subin panicked and unconsciously shoved the tube she had hidden in her bag a little deeper. She glanced around once, then hung her head in embarrassment and spoke in a vanishing voice.
"Um... could you help me too?"
I called her forward as if I had been waiting. When Subin stuck her ass out, I deliberately spoke with a mischievous edge.
"Did you get turned on watching me and Chaerin?"
During the physical exam and when they took the bitch student-ID photos, Subin had been the type who felt far less than the other girls. But now she seemed a little excited; the inside of her pussy was already damp. Love juices would come easily even without long teasing. At my words her face reddened. I began gently stroking her folds with my finger. The soft, pliant sensation was different from Chaerin's.
Subin flinched yet stayed still and simply felt my touch. When my finger slipped inside, her thighs trembled finely. While caressing her I deliberately struck up conversation.
"Subin, there's something I want to ask. Can you spare a little time after class?"
"Hnn...? Y-yeah...."
"I want to hear more details about that illness you mentioned last time."
When my finger pressed firmly against her inner wall, she answered with difficulty, thighs still quivering.
"A-alright..."
In less than a minute Subin's pussy too was slippery with juices. Talking to her while I caressed her seemed to make her feel it even more intensely. I coated the devices with her fluids and gently inserted them into her pussy and anus. Subin sat down and awkwardly wriggled her hips around the foreign objects.
Then it happened.
"Hey, Class President!"
At the lively voice I turned my head. Yeji from the track team was grinning refreshingly at me. She was a vibrant girl with lightly tanned healthy skin, a firm athletic body, and a ponytail that suited her perfectly. I clearly remembered those thighs especially being insane.
"I didn't bring lube either. Can you help me?"
Yeji's tone held none of the embarrassment I had felt from Subin or Chaerin's tsundere coyness. Instead it carried a bold openness, as if declaring she had no ulterior motives. I answered with a gentle smile.
"Of course. Come here."
Yeji approached without hesitation and presented her ass. A firm, toned pair of cheeks with not an ounce of excess fat, sculpted by constant training, filled my vision. Thanks to her bronze skin, her light-pink pussy looked especially lewd. When I slipped my hand between her legs she grinned and swayed her hips.
"Take good care of me, Class President."
Contrary to her cool demeanor, Yeji felt it enormously. The moment my finger touched her she trembled with a sharp "Hnn!" And just like Chaerin she lasted less than thirty seconds before pouring out love juices in abundance. Her body was honest and her reactions explosive. I thoroughly coated the Kegel devices with her fluids and slowly worked them into her pussy and anus. When I deliberately stroked those firm thighs along the way, she let out a pleased nasal sound.
Perhaps my actions served as a signal.
"M-me too!"
"Class President, help me too!"
Suddenly girls all over the classroom began raising their hands and calling for me-every female student except the cold, haughty vice president Ayeong and the eccentric Hayeon who insisted she was a man. Their eyes all blazed with the same desire to be touched. Savoring pussies of every different shape, texture, and reaction was a truly blissful experience. One girl even cried that she was so glad she had been placed in the same class as me. Before long the room was thick with feminine heat and the scent of love juices.
Finally, after I had helped the last student, Seol noona prepared to begin class. But having come this far I had no intention of leaving her alone.
"Teacher."
I called softly toward the teacher's desk.
"Teacher, did you get the devices in properly? If it's difficult, shall I put them in for you again?"
At a question whose intent was plain for all to see, every other girl's gaze swung toward Seol noona.
She looked flustered for a moment, then answered with a flushed face.
"...Yes. Please, Class President."
Forgetting even her position as teacher, she answered like a submissive bitch. Watching her, I thought to myself: in the male-supremacy ideology I had witnessed so far, the nation's brainwashing education had clearly played a major role. But at its foundation lay the powerful, ungovernable sexual desire of the women themselves. That desire-which crumbled so easily at a single touch of a man's hand-interlocked perfectly with the male-superior, female-inferior conditioning. No matter what a man did, as long as he fucked their pussies, the majority of women would be happy.