The air inside the classroom had grown thick and heated from the morning's long stretch of theory and practice.
"Up to this point, we've built the foundational stamina and techniques for fellatio. From here on, we're going to combine those skills and learn how to properly pleasure a man's most sensitive, critical area-the glans."
It was fourth period, the final morning class before lunch.
"A single careless mistake from any of you can turn pleasure into pain for a man. So from this moment, hang on every word I say. Don't miss a single syllable."
She alternated between the textbook and the video, hammering home the three absolute principles that had to be obeyed.
"First: hygiene. Before you serve, your mouth must be perfectly clean. Second: pressure control. Never apply too much force. And last-the most important of all-your teeth. Never, ever let them touch."
Most of the coeds scribbled down every word with solemn faces.
Then noona began explaining the five core techniques.
"The first technique is called the Plains. You flatten your entire tongue wide and lick the whole surface of the glans with gentle, even pressure. Softness and pressure at the same time-it's an advanced move."
She played the demonstration clip of a woman performing glans fellatio with her tongue fully spread.
"Second is the Borderline. You slowly trace the ridge where the glans meets the shaft with your tongue, maintaining a steady speed for one full circle. Keeping the exact path is the key."
"Third is Palate Friction. You pin the glans against the hard roof of your mouth and gently rub it there."
"Fourth is the Texture Variation we learned earlier. Start with plenty of saliva so it's wet and slick. Once the man has gotten used to the pleasure, dry out your mouth to increase the friction."
"And the fifth and final technique: the Tickle. Point your tongue tip and lightly, rapidly flutter it around the urethral opening."
"You won't use that last one very often in everyday service. The chance of making him cum is simply too high."
"As you all know, once a man has ejaculated, it's hard for him to get hard again or cum a second time right away. We can't go around wasting his precious stamina, can we?"
When the theory ended, Iseol noona looked straight at me.
"Shall we begin the practical now?"
The classroom immediately bustled with preparations for the hands-on session.
Desks and chairs were shoved against the walls in an instant, and I took my seat once more on the chair at the center of the platform.
"I'll demonstrate first again this time."
Iseol noona started by stretching her jaw-opening her mouth wide and rolling it left and right to loosen the joint.
"Especially when you're serving someone as well-endowed as Sihyuk, this kind of thorough stretching is essential. If your jaw gets strained, you can't focus on the service."
After finishing the stretch, she took warm water into her mouth, then cold, swishing and spitting in turn to fine-tune the temperature inside. The professionalism of it already had me looking forward to what came next.
After finishing the stretch, she took warm water into her mouth, then cold, swishing and spitting in turn to fine-tune the temperature inside. The professionalism of it already had me looking forward to what came next.
Then she knelt in front of me and gazed reverently at my fully erect cock.
She first took my glans lightly into her mouth and looked up at me, asking with her eyes if the temperature was all right.
Holy fuck...
It was perfect. Not too hot, not too cold-just the right, blissful warmth.
The carefully heated interior of her mouth, the soft flesh of her tongue and palate wrapping around the head-goosebumps raced down my spine the moment they closed over me.
It reminded me of the languid pleasure of having my hair washed at a salon years ago. But this was my cock, not my scalp, and the intensity was in a completely different league.
When I nodded in satisfaction, she began the first technique in earnest.
First technique: the Plains.
Noona's tongue flattened broad and soft, licking thoroughly over the entire surface of my glans.
"Mmmph, uum, churp..."
The instant her tongue swept across the head, pleasure flooded in. Yet it wasn't sharp.
If the stimulation had been even a fraction stronger it would have hurt, but her exquisite control of force left nothing but pure pleasure.
That deep, thorough stimulation rattled my brain. If she kept this up I felt like I could cum any second.
"Ohh..."
I had meant to keep the admiration inside my head, but it slipped out of my mouth anyway.
After finishing the first demonstration, noona pulled off and addressed the girls.
"That is the Plains technique. The key is gentle pressure with the entire tongue.'
"Look at Model Sihyuk's reaction. His brows are slightly furrowed, yet his lips are parted comfortably.
That's a sign of satisfaction."
She continued the demonstration like a commentator, explaining her technique and my responses in real time.
Next came the second technique: the Borderline.
Noona's tongue began slowly circling the ridge where the glans met the shaft.
At first she traced clockwise at a constant speed and pressure. It felt as if her tongue never once strayed from the exact line.
Just as I was getting used to the sensation of the ridge being licked, she reversed direction and circled counterclockwise.
The unexpected change of direction sent a novel wave of pleasure sweeping across the head.
My eyebrows twitched on reflex; she gave me a smiling look with her eyes, then stopped the blowjob to explain again to everyone.
"Most men prefer clockwise, but individual tastes vary. Sihyuk, which direction felt better?"
*... Counterclockwise was better."
"I see. In real service, all of you must watch the man's reactions and discover which direction he prefers."
The third technique-Palate Friction was even more intense.
Noona first laid her tongue flat beneath my glans. Then she tensed the muscle and lifted the head upward as if cradling it.
I felt the strange sensation of the upper surface of the glans being pressed firmly against the hard roof of her mouth.
Holding that position, she moved her tongue in tiny forward-and-back motions, rubbing the glans meticulously against the rough texture of her palate.
This was stimulation of an entirely different kind.
A moment later she lowered her tongue, took my cock in one hand, lifted it, and began rubbing the glans directly against her own palate.
The firm yet smooth texture-different from the tongue-seemed to awaken every nerve ending on the surface of the head.
"You can lift the cock with your tongue and grind it against the palate, or you can use your hand to assist like this."
Having the angle controlled by her hand made the friction feel far deeper and more powerful.
The fourth technique, Texture Variation, was pure artistry.
At first her mouth was flooded with saliva, wet and slippery as it toyed with the glans. Then it gradually dried out.
As the friction rose, the stimulation grew sharper by degrees.
If it had been dry from the start it would have hurt, but my glans had already been hard for a while and had dulled a little; now the sensation was exactly right.
I could feel the head becoming hypersensitive all over again.
Receiving glans fellatio with the fourth technique, I finally understood why this practical had a set order.
If she had scraped my glans with a dry, rough tongue right from the beginning with no warning, it would have been closer to pain than pleasure.
But the three preceding techniques had served as perfect foreplay, thoroughly warming up my cock, so the sharp stimulation of the fourth technique arrived as pure pleasure, never pain.
Starting soft and steadily building the intensity-that was the moment I learned the importance of sequence with my own body.
The fifth and final technique, the Tickle, was the crowning flourish.
Noona's pointed tongue tip fluttered lightly and rapidly around the very tip of the glans-around the urethral opening.
A dizzying sensation that felt like I was about to cum shot straight through my hips.
I wanted to beg her to keep blowing me just like that.
Unfortunately, noona had only been giving a demonstration for the class and stopped there.
"That concludes it. As you saw, if you execute these five techniques in order, a man can feel pleasure without any pain."
The moment her demonstration ended, I couldn't help being impressed.
The blowjobs Chaerin had given me until now had been good in their own way, but this was on another level entirely.
The skill of an Academy University graduate-and a teacher at that-surpassed anything I had imagined.
At the same time I found myself looking forward to how much better Chaerin's blowjobs would become after learning these techniques. I was going to have to start asking for morning fellatio every single day.
"All right, come up one by one and practice."
The classroom seethed with excited heat.
The coeds walted for their turns, lips already moving as they silently rehearsed the demonstration they had just watched, faces flushed.
Just the thought of taking a man's glans into their mouths was enough to make them happy.
At Iseol noona's words, Chaerin stepped forward first.
Without the slightest hesitation she knelt in front of me and began a fairly practiced jaw stretch.
The way she worked the joint left and right even carried a grim determination.
It was a secret from Chaerin, but the thought of that serious face sucking on my glans only made me harder.
Before Chaerin put her mouth on my cock, she looked up at me with pure confidence in her eyes.
Then she took alternating mouthfuls of warm water and cold water and finally cradled my glans between her lips.
Watching her copy Seol noona's routine so carefully was both adorable and wickedly cute.
"Temperature's fine."
The moment I said so, Chaerin's tongue found my glans.
A hot, wet sensation wrapped around the head. She was approaching this with a technical focus that felt different from every sexual processing session so far.
Just as the theory lecture had taught her, Chaerin spread her tongue wide and pressed it softly across the surface of my glans, licking in smooth strokes. Soft flesh gliding and enveloping the head-that was the feeling. Conscious of technique, her tonguework was a little clumsier than noona's, but even that clumsiness was stimulating.
"Chooop, churrrp, chuuut..."
From the first technique to the last, Chaerin worked through everything she had learned. Her flattened tongue pressed gently against my glans, and the way she licked the ridge stayed reasonably steady. For a beginner, her overall skill was solid-perfectly serviceable.
But after tasting Seol noona's near-divine technique just moments earlier, a few shortcomings stood out.
"Sihyuk, if you don't mind, could you give a short bit of feedback to everyone once they finish their practice?"
When Chaerin's turn ended, Seol noona asked the favor, so I delivered my notes.
"Chaerin."
"How was I?"
Having finished every technique, Chaerin wiped a sheen of sweat from her brow. Kneeling and working the fellatio slowly had clearly worn her out. How hard she had tried was obvious at a glance.
She looked up at me with eyes full of expectation. I did well, right? was written all over her face. That only made me more careful with the feedback.
"Overall it was excellent, but I wish the temperature inside your mouth had been a little warmer. Right now it feels slightly lukewarm. And that last stimulation of the urethral opening put too much force into it. It felt more like stabbing than tickling."
At my critique, Chaerin's confident expression crumpled in an instant. She stuck out her lower lip, pulled it back in, and muttered under her breath.
"...Got it."
Frustration was plain on her face, but she obediently returned to her place and stood. The look in her eyes said she was determined to give a perfect blowjob next time no matter what.
"Still, you did really well. I'm looking forward to next time."
That final addition smoothed her expression out again.
Next was the vice president, Cha Ayeong.
Long black hair, a cold cat-eyed beauty. Even when she knelt in front of me, that icy expression never thawed. Without showing a flicker of emotion, she finished the textbook jaw stretches and mouth-temperature control.
Ayeong's tongue met my glans. The temperature was nearly perfect-warm without being scorching, exactly the ideal Seol noona had described. The soft texture created by just the right amount of saliva was first-rate.
But it was too soft. She licked as carefully as if she were handling fine porcelain, so the pleasure only skimmed the surface. On top of that, there was no wet sucking sound and no change in her face, which left the mental satisfaction wanting.
"Vice President."
When I spoke mid-session, Ayeong stopped her tongue, blinked, and looked up at me.
"Put a little more strength into it. Not enough pressure."
She immediately tightened her mouth. The moment her lips clamped down and her tongue pressed firmly into the glans, the intensity of the pleasure shot straight up. It felt so good I leaned back in the chair and let out a sigh like a man sinking into a hot bath.
After Ayeong finished practicing all five techniques, I gave her feedback too.
"You were short on force at first, but you're excellent at taking feedback. Once you get a little more used to a cock, you'll be even better."
Even at the praise she showed no real change of expression, only tipped her head in a small nod before returning to her place. For a moment I found myself wishing I could see that blank face twist with pleasure the way it had during the physical exam.
Then came Subin's turn. She stood in front of me wound tight with nerves.
"Um... Sihyuk. It's just... my mouth is small, so..."
"It's fine. Relax."
Encouraged by my words, Subin opened her small mouth and began the jaw stretches. But not long after she took the glans in, her expression soured. Her jaw seemed unusually weak compared to the other girls. Yesterday she hadn't been able to keep up the cleaning fellatio for long either-so that had been a jaw problem after all.
"Han Subin."
Unable to watch any longer, Seol noona stepped in.
"You're putting far too much tension into your jaw. Forcing it can injure the joint. Make sure you stretch your jaw joint every day without fail."
"Yes, teacher..."
The way Subin looked up at me, completely deflated, was so much like a rain-soaked puppy that a laugh slipped out before I could stop it.
"Don't push yourself. Just trying this hard is already amazing."
At my words, Subin's face lit up. From around the classroom I heard little sounds of envy aimed at her for the encouragement.
Subin finished her service clumsily but with everything she had. Even while she kept massaging her jaw with one hand, the look she fixed on me burned hotter than anyone else's.
Next was the cheerful track-and-field girl, Seo Yeji. Yeji's caress was a little rough around the edges. Rather than executing each technique with precision, it felt like she was simply working her tongue as hard as she could. But inside that clumsiness I could feel, thick and clear, how sincerely she was trying for my sake.
-x-X-x-
Unlike her usual lively self, the way she looked up at me with shy eyes while concentrating so hard-that gap in expression was pretty entertaining.
"A little rough, but I could really feel the sincerity. And that expression of yours is fun-totally different from usual."
"Thanks for the feedback! Next time I'll serve you even harder!"
Yeji laughed brightly at my notes and bounced back to her place.
Then it was Lee Yuna's turn. The flashy yellow-dyed gyaru-style girl who had stood out so much during the physical exam. Just like last time, Yuna knelt in front of me with a confident smile and not a shred of nerves.
"Looking forward to it, Class President~"
She let out that pleasant nasal lilt, shot me a wink, and took my cock into her mouth in one go.
The way she only half-bothered with mouth temperature had made me write her off a little, honestly. I even thought she might be worse than Subin.
Then she blew my expectations clean out of the water.
"...Oh?"
"Uum, huu, churrruup.
A sensation completely different from anything so far. It wasn't that she sucked well-her tongue itself was different. Yuna's tongue was impossibly soft and yielding, like jelly or pudding. The temperature was pleasantly warm, too.
Every time that tongue slid across my glans, pleasure washed through me as if every nerve in my body were melting. And she didn't stop there. Yuna took two of the techniques we had learned today and remixed them in her own style.
For the first technique, the Plain, while the other girls had modulated pressure, she crushed my glans under her tongue. But because the tongue was so soft, the pleasure was enormous. And for the last technique, the Tickle, she teased the urethral opening so aggressively that it should have hurt-yet it didn't sting at all.
Thanks to that, the urge to come rose quite a bit. A little longer and I might have finished. The other techniques were ordinary, but in my mind Yuna was already in first place.
As if she could read my thoughts, the eyes she turned up at me brimmed with confidence. She knew exactly what her weapon was.
When the fellatio ended, after she had licked the tip of the glans with the end of her tongue right to the last second, I gave her the praise she had earned.
"Your tongue... is ridiculously soft. I've never felt anything like that. If you just raise the finish on the techniques, you'll be perfect."
I was in such a good mood I didn't hold the compliments back.
Lee Yuna wore a victor's smile at the feedback, while over on one side of the classroom Chaerin bit her lip with a look of pure disbelief.
Then it was Lee Nari's turn.
An ordinarily pretty long-haired beauty. But I clearly remembered the special note from her physical exam. A tongue long enough to reach her chin. During the cherry-stem-tying drill earlier, Nari had succeeded in just five seconds and stunned everyone.
With a slight lift at the corner of her mouth, Nari quietly knelt in front of me and carefully took my cock into her mouth.
"...Whoa."
This was another kind of pleasure entirely. If Lee Yuna's tongue had been the extreme of texture, Lee Nari's was the extreme of surface area.
The moment the glans entered her mouth, that long, soft tongue wrapped the entire head without a single gap.
The uncanny sensation of a tongue that could circle the glans and still have length to spare. It was pure tongue-fellatio. It felt as if a small, pliant snake were coiling around the head.
When she saw how satisfied I was, Nari answered with a charming eye-smile and kept going. She demonstrated all five techniques cleanly. But she didn't stop there.
"Teacher, may I show one technique of my own?"
Seol noona nodded with clear interest, and Lee Nari took my cock deep again.
And then... a technique I was tasting for the first time began.
Nari kept the entire glans wrapped in her long tongue and slowly started regulating the moisture inside her mouth. What had first been a slick, hot tongue surface gradually dried out, shifting into a slightly rough texture. Waves of dazzling stimulation-wet and dry, soft and coarse-crashed over the glans without pause.
"Kh...!"
The urge to come that I had somehow held back until now hit its limit. The instant I gripped the chair, Nari's fellatio evolved another step.
"Chuk, chuk, churrr, churrr, churrr...!"
Her tongue, now dry, moved at a terrifying speed, scrubbing across the hypersensitive glans. In particular she raked the urethral opening at the tip with that faintly coarse surface.
Every scrap of focus in my body funneled into the glans, and a thrilling jolt of pleasure raced down my spine. The stimulation that had been building since morning, the reverence of twenty girls, and this absurd streak of continuous glans fellatio-everything stacked and stacked until it finally broke through the limit.
"I'm coming...!"
I cried out shortly and, at last, came inside Nari's mouth.
Byurrrrrrt!
Hot semen poured into her mouth. Every girl in the classroom held her breath and watched. Their eyes were full of shock and unbearable envy.
Nari swallowed every last drop of my come, then looked up at me with a satisfied smile.
"How was it?"
Completely surrendered to the chair, I didn't even register that she had used formal speech; I only nodded in acknowledgment. The victory was hers.
Even after I came, the lesson continued. The atmosphere in the classroom, however, had transformed completely.
The college girls serviced my cock with gazes far more desperate and feverish than before.
Someone recited this world's common sense-that a man who had ejaculated once needed to rest-but I refused.
My vigorous cock was still capable of coming any number of times.
Before long the lunch bell rang, yet we had not even finished half the practical training.
"What do we do... it's lunchtime..."
A girl who still had not gotten her turn at fellatio practice spoke with open regret, and the rest of the women began to stir restlessly.
They looked ready to skip a meal entirely rather than let this golden opportunity slip away.
It made perfect sense. For them, the chance to see a living man's cock with their own eyes, to touch it, even to take it into their mouths, was a first in their entire lives.
Even the girls who had already finished their practice refused to leave, wanting just a little longer to stare at it.
Basking in their heated stares, I spoke.
"It's fine. We can eat a little late. Keep going."
At my permission nearly everyone burst into cheers.
Our secret practical lesson was still underway when female students from other classes, passing down the corridor, happened to glance through our doorway and freeze at the sight.
One man sat exposed on the platform, cock out, while a throng of college girls waited their turn to suck him-an utterly shocking tableau.
The rumor exploded outward. Within minutes the windows of our classroom were packed solid with girls from other classes. Seniors and even a few teachers dotted the crowd.
They watched the scene inside with bated breath, eyes thick with envy and jealousy.
Feeling every one of those stares glued to the glass, I stroked the hair of the girl currently working my cock-her name already forgotten.
Embarrassment at being so publicly displayed mixed with a surging confidence that filled my entire body.
Only after every last girl had finished her practice, long past the end of lunch period, did we finally manage to reach the cafeteria.
Naturally Chaerin and Subin flanked me on either side, while Yeji claimed the seat directly across.
Around us settled Lee Yuna-the gyaru who had performed especially exquisite glans fellatio earlier-and Lee Nari, first place in the blowjob rankings.
While the other students ate ordinary cafeteria fare, I sliced into the special meal of grilled eel and steak.
My gaze happened to fall on the pink sausage Subin was eating. Even with expensive steak on my plate I suddenly, inexplicably, wanted a bite of that pink sausage.
"Sihyuk, open up-ahh."
Catching where my eyes had gone, Subin speared the sausage with her fork and held it to my lips.
Pure goodwill shone on her face.
"Thanks. Just one bite, then."
"Don't you want some pork cutlet too?"
The moment I accepted the pink sausage, Chaerin thrust a piece of her own pork cutlet toward me from the opposite side.
Subin's brow twitched at Chaerin's competitive move. I took the twin food assaults from both flanks and laughed quietly under my breath.
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"Ease the tip of your tongue a little more. The teasing sensation is still lacking."
"Yes. That look right there. Like you're about to devour the man whole."
My precise, filthy feedback produced the surreal spectacle of girls sticking their tongues out into empty air, diligently practicing.
I smiled with pure satisfaction at the ridiculous yet lewd scene.
The rest of the lunch period they stayed behind, obsessively drilling tongue exercises. The classroom
filled with cherry-stem practice tools and tongue-training gadgets.
When afternoon classes finally started the girls all left for their major lectures.
I decided to take a solitary stroll across the academy campus.
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