"Ugh... I really did it..."
Still in a daze, I was basking in the afterglow of orgasm when a click from a camera shutter snapped me back to reality.
Startled, I saw that Mari was snapping photos of me with her smartphone.
Then another click as she took another shot.
"W-what are you doing?! Stop that!"
"Heh, got it! Got it! If you ever defy me again, I'll send this to Miki!"
Mari held up the incriminating photo with a gleeful expression: my younger sister's panties, soaked in semen and wrapped around my groin, leaving me exposed in a state of utter vulnerability.
...No, this isn't the time for calm explanations! This is serious—what is Mari thinking?!
"Y-you can't just... That's not a joke, seriously!"
"Heh heh, why does it have to be Miki? This pervert just lets it slip out that easily!"
"Y-You're just asking for it, telling me to send it..."
"And you actually send it when someone tells you to? Hmph, you shameless cheating penis!"
Matsuri wore a gleefully sadistic smile as she fiddled with her phone.
If she ever sent that kind of thing, it would be the end of me.
Miki's face from when we parted, her flawless smile as she declared:
"Well, I don't think it's just limited to you, Oni-san... but if you ever cheat, I'll cut it off."
...Hmm, if she finds out, I really don't know what'll happen.
Wait, now that I think about it, maybe I should just spill the whole truth from start to finish.
If it were some random woman, she'd definitely cut it off. But since it's Matsuri, there's a chance she might forgive me.
To be honest, I don't want to take such a gamble. Betting the survival of my penis is too risky.
I can't predict what might provoke Miki-chan's wrath...
As I feel a cold sweat trickling down my back, Matsuri hums cheerfully, scrutinizing the photos with apparent delight.
Any younger sister who gleefully saves pictures of her brother's orgasm is seriously messed up.
But now I realize... was that overly attentive service earlier all part of her plan?
I've been completely fooled. The quality of the service itself was impeccable, but the price is exorbitant.
Damn it! If this is how it's going to be... I'll have to snatch her phone by force!
Having reached this conclusion, I launched a surprise attack on Matsuri, still clad in semen-soaked underwear.
"Kyaa?! Hey, what's this?! Stop it, seriously!"
I'll make her realize who's stronger in terms of arm strength.
I needed to show her just how strong I was... how scary a man could be.
"W-what are you doing?! Let go of me!"
"Ugh! That hurts! Ugh... Aaargh!"
A clumsy, low-level brawl erupted.
Just as I realized we were actually having a decent fight, my mother's furious voice boomed from downstairs:
"Quiet down! If you're going to fight, do it outside!"
Her voice sent a chill down my spine.
Fighting outside in this state—still wearing my underwear—would definitely lead to trouble.
The moment I realized how ridiculous I looked and tried to tuck away my penis, Matsuri's devastating kick landed.
...Damn it.
From then on, it was hell.
Later that night, while playing games in my room, Matsuri suddenly appeared with an innocent expression and abruptly kicked me in the back.
I glared at her, my eyes burning with resentment over the near-crush of my jade.
"If you try to steal my phone again," she threatened condescendingly, "I'll send the pictures immediately."
For now, I just plastered on a polite smile and played along... but honestly, I was tempted to smash her phone right along with her.
But what if the images had already been copied to a computer? Or uploaded to the cloud?
Well, Matsuri's a dummy, so she probably couldn't manage anything like that. At most, she might have copied them to her phone's SD card.
Still, that's more than enough trouble.
Come to think of it, isn't this actually a serious crime?
My younger sister is threatening me with photos of me jerking off while she was wearing nothing but her underwear. If this ever comes to light, I'll win the argument hands down. But socially, I'm probably finished.
Honestly, what grudge does she have against me to treat me like this?
"What the hell are you doing? What's your problem?"
"I want some ice cream~"
"Huh?"
"Ice cream."
Did you hear that, Mrs. Reader?
Such blatant rudeness, completely out of context.
I wanted to snap back, "So what's your point?" But Matsuri started fiddling with her phone, implying she'd send the photo if I didn't hurry up, so I reluctantly paused my game.
"...Fine, fine, I get it."
I grabbed my wallet and headed out to the nearby convenience store.
As I reached the first floor, I realized Matsuri was following me.
"What do you think you're doing?" I couldn't help but ask, turning around.
"You're going to the convenience store, right?"
"Huh? You're coming too?"
"Is that a problem?"
What the hell is she doing...? If that's the case, she should have gone alone from the start.
But I couldn't say any of that, so I ended up walking to the convenience store with Matsuri.
We walked down the dark street, relying on the streetlights, the two of us together.
But when I really thought about it, when was the last time Matsuri and I had walked outside together like this?
I vaguely remembered her saying something a while back about not wanting to walk with a creepy guy like me, but what happened to that?
"It's just... it's night, and nobody's around."
When I asked sarcastically, Matsuri muttered that and fell silent.
This kind of thing... It's not about what others think, is it? It's just how you feel, right?
Well, I don't care about this idiot's thought process anyway.
We walked for about ten minutes before arriving at the convenience store.
I wanted to get home quickly, so I immediately headed straight for the freezer section.
Beside me, Matsuri started mumbling, "Which one should I get? Which one looks the tastiest?" I didn't bother responding, just randomly picked my own.
I just wanted to get this over with and go home.
In the end, Matsuri picked something that cost three times as much as my ice cream.
Then, at the checkout, she pulled out a chocolate snack to add to the bill.
"What?"
Her expression practically dared me to complain.
Of course, I had to foot the entire bill.
If she kept this up, it was going to get seriously annoying.
Matsuri suggested we stop at a small park on the way home to eat the ice cream before it melted.
As we sat on a bench in the empty park, I ripped into the wrapper roughly, making sure to show my irritation as clearly as possible.
"Hey, can I have a bite?"
But Matsuri, unfazed by my attitude, simply bit into the popsicle I was holding.
Then, as if to tease me, she held up her own popsicle in front of my eyes.
"Want some?"
"No thanks."
"I won't share!"
Hehehe, Matsuri giggled, looking inexplicably amused.
She was in such an irritatingly good mood.
Besides, it's not like I was going to share anyway—I bought it with my own money!
Gloating over someone's weakness and getting off on controlling them... She's a true sadistic masochist.
She definitely has some kind of personality disorder. At this rate, her future is seriously concerning.
After we got home, Matsuri naturally returned to my room.
I don't know if she's planning to stay longer, but I wish she'd go back to her own room already.
"Hey, foot rub?"
Matsuri, sprawled face-down on the bed, kicked her legs weakly and barked orders in a hoarse voice.
When I ignored her, she nonchalantly started fiddling with her phone, so I flinched and approached the bed like a servant.
For lack of anything better to do, I half-heartedly massaged her calves with my fingertips while nervously glancing at her phone screen. It turned out she was just playing a game.
Damn it... I wanted to play games too... I was in the middle of playing when she interrupted me.
Is there any way to break free from this bizarre master-servant dynamic?
"You're so weak! You need to be stronger!"
Her legs, extending from her shorts, were lean and well-toned, perhaps from regular exercise. They weren't as pale as Miki-chan's, but had a healthy sun-kissed glow that radiated vitality.
Well, that's beside the point. The way she's standing now, legs spread wide and vulnerable... I think I could probably slip a finger into the slight gap at the base of her panties and invade her vagina.
The reason I suddenly thought of something like that is because Miki has honed my hand job skills to perfection.
In other words, given the opportunity, I'm confident I could send Matsuri to heaven with ease.
Thinking about that at least gives me something to focus on, otherwise the anger simmering up from this humiliating treatment would have nowhere to go.
"Hey~ you gonna do it~?"
Damn that brat...
If I knew this was going to happen, I should have taken a few photos of her during the last "Dere Matsuri" incident.
Well, even if I couldn't get photos or videos, if I had secretly recorded audio, I could have used it to my advantage later.
If I could just get her back to being Dere Matsuri again, this would be so much easier... But honestly, I don't really remember how we got to that point in the first place.
All I know is that what happened afterward was intense.
I vaguely recall her saying something about wanting me to pleasure her, but there's not even a trace of that sentiment now.
In that case, I'll have to mobilize all my skills and seduction techniques to get her in the mood.
The only part of her body I can touch freely right now is her legs. But according to certain sources, some women have erogenous zones on their legs.
I switch my touch to a soft, gentle caress, lightly stroking her skin from bottom to top, then from top to bottom.
Then, boldly, I slide my fingers from her ankle up along the inside of her thigh, stopping just below her groin.
After repeating this several times, I carefully massage the backs of her thighs near her buttocks, and her hips begin to wriggle slightly.
"Hey,"
My hands froze at the voice.
I cautiously raised my head to find Matsuri propping herself up on her elbows, watching me with a slightly suspicious expression.
"W-what is it?"
"What's that? You've been... doing that for a while now."
"...Huh? Oh, it's nothing."
Maybe I was being a little too obvious.
I could interpret it as a sign that my efforts were having some effect, but if she catches on to my scheme, it'll all be for nothing.
Having played my safe card, I eventually resumed the original massage movements.
And a few minutes later...
How long am I going to keep doing this...? My hands were starting to tire.
Matsuri had gone completely silent, so I tried to gauge when I'd get the okay. She remained face-down, her cheeks pressed against the futon as she closed her eyes.
The smartphone she'd been playing games on had slipped from her hand, its screen now dark.
Could this be...
"Hey."
I called out, but there was no response.
"Idiot Matsuri."
Still no reaction.
I leaned in close and listened. Suu, suu... Faint, rhythmic snoring drifted to my ears.
Just as I thought. Matsuri was asleep.
...Hey, are you out of your mind? Showing such vulnerability in this situation is practically begging to be taken advantage of.
Realizing that Matsuri was genuinely asleep, I couldn't suppress the grin that threatened to break out. Seizing the opportunity, I reached for her phone.
But when I woke it from sleep mode, it demanded the passcode to unlock.
This was a dead end. Damn it, Matsuri, of all people, actually locking her phone?
I gently set the phone back down, stood up, and looked down at Matsuri's prone form, crossing my arms.
Now then... what to do with this woman? First, I could give her a meat pie on the forehead... no, this isn't the time for such trivialities.
I've got more than just a lump on my forehead—I've got a damn meaty rod. This is no joke anymore.
"Now..."
Despite being constantly ridiculed as a wuss and a nerd, when it comes down to it, I can handle myself.
Exuding a serious aura and embodying the essence of a final boss, I reach for my smartphone.
If they're threatening me with photos, the obvious solution is to fight fire with fire—take pictures right back.
I launch a silent camera app and aim the lens at Matsuri.
First, a full-body shot from a distance. Then another from a different angle. Gradually closing in, I snap more shots.
Next... a close-up of her foolish sleeping face. Adjusting my position, I take more and more close-ups.
"Phew..."
Heh-heh-heh... I got it.
I actually got it.
I wiped my forehead with the expression of a man who had just finished a job.
I had merely taken some photos, but for some reason, I felt a strange sense of accomplishment and exhilaration.
When I reviewed the saved photos, I found they were all quite well taken. Maybe I have a knack for candid photography. Another talent seems to be awakening within me.
It was frustrating, but Matsuri's sleeping face was undeniably adorable. I have to admit, at least in terms of appearance, she's impressive. Appearance-wise, that is.
Having unexpectedly captured something good, I looked at the photos repeatedly, satisfied.
...Wait, wait. No, something's off.
What's the point of taking so many photos of her sleeping? Am I planning to publish a Matsuri photo collection?
This isn't what I need. What I need now is erotica. Erotica so explicit I couldn't show it to anyone.
I need erotica that surpasses even the memory of my pants.
But reaching that level raises the bar exponentially.
Man, she must have some seriously embarrassing photos of me, right?
Now that I'm in this situation, I have no choice but to strip her. I can't let this once-in-a-lifetime opportunity slip through my fingers...
I reassess my prey's condition.
Matsuri is wearing a short-sleeved shirt and shorts, leaving her quite exposed.
This means I can get some decent shots without forcing a full strip.
Even those shorts—by giving the crotch a good tug, I might just be able to catch a glimpse of her "down there," right?
Still clutching my phone, I kneel beside the sleeping Matsuri.
Since I was massaging her earlier, touching her legs is fair game.
And if I accidentally let my hand slip toward her rear, and "accidentally" hook my finger on the edge of her shorts...
Pitot. I placed my hand on the back of her thigh. Then, I slid it slowly toward her buttocks, nonchalantly grasping the edge of her underwear.
As I pulled it up, a small gap opened, revealing her undergarments as expected.
My hands trembled violently from the overwhelming tension.
But the pants fit surprisingly snugly, making any further movement extremely risky.
For now, just seeing the underwear was enough. Seizing the moment like a photographer capturing a perfect shot, I aimed my phone.
But then...
"Mmm..."
With a soft groan, Matsuri rolled over in her sleep.
She wasn't fully awake, but startled, I abruptly withdrew my hand and stood up, dropping my phone in the process.
The clack of the phone hitting the floor echoed, and Matsuri, now lying on her back, slowly opened her eyes.
"...Hm?"
Our eyes met. I was probably frozen in some awkward position, and Matsuri was rubbing her eyes as she sat up, looking at me suspiciously.
"Hey, were you doing something just now?"
My heart lurched so hard I could almost hear it pounding.
Of course, I couldn't possibly say, "I was trying to snap a picture of your crotch through your underwear."
Fortunately, she hadn't witnessed anything decisive, so I still had a chance to talk my way out of it.
This was the moment of truth. I maintained my poker face and tried to deflect her questions.
"Oh, you're awake, ha ha... I was just... getting a massage... yeah, ha ha..."
As I babbled these nonsensical explanations, Matsuri grew even more suspicious and pointed at the floor.
"Your phone fell."
"Huh? Oh, uh..."
As I moved to pick up the phone as instructed,
"Wait!"
Matsuri suddenly shouted, swiftly jumping off the bed and snatching the phone from the floor before I could reach it.
By the time I realized what was happening, it was too late. Matsuri held the phone's screen right under my nose.
"What's this? What were you trying to take a picture of?"
The blood drained from my entire body.
My phone's screen was frozen on the camera interface, as if it was screaming, I was just about to take a secret photo!
"Ah, that, uh, when I dropped it, the camera screen..."
I blurted out a lame excuse, but who would believe that?
Of course, Matsuri wasn't listening to a word I said. She ignored me and started swiping through my phone.
Then, immediately...
"Ah!"
She found it.
My collection of "Matsuri's best shots"... no, wait, a bunch of mystery photos from failed attempts at taking erotic pictures.
"Ugh, this is the worst!"
Matsuri grimaced as she scrolled through the photos one by one.
Meanwhile, I felt like something I'd never wanted anyone to discover had been exposed. My mind went blank, my heart raced, and my knees trembled violently.
This is bad, really bad. Depending on how this goes, I might have to report this to Miki immediately—or even send her the photos.
"What is this? All pictures of her sleeping..."
Having my younger sister see all the photos I'd taken of her while she was asleep... It's even more embarrassing than getting caught masturbating.
Matsuri scrutinized the photos I'd taken for a long moment before suddenly snorting derisively and giving me a sly, meaningful grin.
"Hey, you..."
"Y-yes?"
"Taking pictures like this..."
Matsuri paused, swallowing her words.
What was she going to say? The suspense was terrifying. Was this the moment my penis was being sentenced to death?
"You... you like me, don't you?"
"...Huh?"
*****
Read more than 1000 chapters worth of content over on Patreon! Patreon.com/IncognitoNovels