Chapter 31
The air in the classroom had grown hot from the theory lessons and practical training that had continued all morning.
“So far, we've built up the basic stamina and techniques needed for blowjobs. From now on, we'll combine those techniques and learn how to pleasure the most sensitive and important part of a man's body: the glans.”
The fourth period—the final morning class before lunch.
“Even a minor mistake on your part can cause a man pain instead of pleasure. So from now on, don't miss a single word I say, and pay close attention.”
She alternated between the textbook and videos as she emphasized the three principles that had to be followed without exception.
“First, cleanliness. Before providing service, you must make sure your mouth is perfectly clean. Second, control of pressure. You must never apply too much pressure. And finally, the most important thing: your teeth. Never let them touch it.”
Most of the female university students took down every word noona said with serious expressions.
Next, noona began explaining the five key techniques.
“The first technique is called ‘the Plain.’ You spread your entire tongue wide and lick the entire surface of the glans while applying gentle pressure. It's an advanced technique that requires both softness and pressure at the same time.”
Noona showed them a demonstration video of a glans blowjob using her entire tongue spread wide.
“The second is ‘the Boundary Line.’ Use your tongue to slowly make one complete circuit along the boundary between the glans and the shaft while maintaining a steady pace. The key is keeping your trajectory precise.”
“The third is ‘Palate Friction.’ Press the glans against your hard palate and gently rub it.”
“The fourth is the ‘Texture Variation’ we learned earlier. At first, keep plenty of saliva in your mouth so the glans stays wet and slippery. Once the man grows accustomed to the pleasure, dry out your mouth to increase friction.”
“The fifth and final technique is ‘the Tickle.’ Raise the tip of your tongue to a point and lightly, rapidly tickle the area around the urethral opening.”
“The final technique isn't used often in everyday situations. That's because it has a very high chance of making a man ejaculate.”
“As you all know, once a man has ejaculated, he can't get hard or ejaculate again right away. You mustn't waste his precious stamina, must you?”
When the theory lesson ended, Iseol noona looked at me and said,
“Then, shall we begin the practical training?”
The classroom was once again bustling as everyone prepared for the practical session.
The desks and chairs were pushed against the walls in an instant, and I sat down once more in the chair at the center of the platform.
“This time as well, I'll demonstrate first.”
Iseol noona began with stretches in which she opened her mouth wide and moved her jaw from side to side to loosen the joint.
“Especially when giving a blowjob to someone with a large penis like Sihyeok, this much stretching is essential. If your jaw gets strained, you won't be able to concentrate on your service.”
After finishing her stretches, noona delicately adjusted the temperature inside her mouth by alternately holding warm and cold water in it and spitting it out. She looked so professional that I was already looking forward to it.
She then knelt before me and gazed reverently at my fully erect cock.
First, she lightly took my glans into her mouth, then looked up at me, silently asking with her eyes whether the temperature was all right.
‘This is insane…’
The temperature was exactly right—neither too hot nor too cold, but pleasantly warm.
Her mouth was warm and perfectly heated. The moment the soft flesh of her tongue and palate enclosed my glans, goosebumps ran down my spine.
It reminded me of the drowsy feeling I'd once experienced when having my hair washed at an old-fashioned salon. But since this was my cock rather than my head, the pleasure was incomparably more intense.
When I nodded in satisfaction, she began demonstrating the first technique in earnest.
The first technique: the Plain.
Noona's tongue spread wide and soft, licking over the entire surface of my glans.
“Mmph, ooh, slurp….”
A rush of pleasure surged in as her tongue licked my glans. It was intense, but not sharp.
If the stimulation had been even a little stronger, it would have hurt, but thanks to her exquisite control of pressure, all I felt was pleasure.
The deep stimulation shook my brain. If she kept going like this, I felt I might cum at any moment.
“Oh….”
I'd intended to express my admiration only in my thoughts, but it escaped through my mouth anyway.
After finishing her demonstration of the first technique, noona pulled her mouth away and spoke to the women.
“This is the Plain technique. The key is applying gentle pressure with your entire tongue.”
“Look at Model Sihyeok's reaction. His brow is slightly furrowed, but his lips are relaxed and parted. That's a sign that he's satisfied.”
Noona continued her demonstration, explaining her technique and my reactions like a commentator.
Next came the second technique, the Boundary Line.
Noona's tongue began slowly tracing a circle along the boundary between my glans and shaft.
At first, she moved clockwise at a steady speed and with consistent pressure. Her tongue never strayed from the boundary line and traced it perfectly.
Just as I was getting used to the sensation of her licking the boundary line, noona changed direction and began drawing a circle counterclockwise.
The unexpected change in direction sent a novel wave of pleasure sweeping across my glans.
When my eyebrows twitched reflexively, noona gave me an eye-smile, stopped, and explained to everyone once more.
“Most men prefer a clockwise direction, but there are individual differences. Sihyeok, which direction did you prefer?”
“…Counterclockwise feels better.”
“I see. In actual practice, you must watch the man's reactions and find the direction he prefers.”
The third technique—Palate Friction—was even more intense.
Noona first laid her tongue flat beneath my glans. Then she tensed it and pushed my glans upward, as though supporting it.
I felt the strange sensation of the upper surface of my glans being firmly pressed against her hard palate.
Maintaining that position, she moved her tongue minutely back and forth, meticulously rubbing my glans against the rough surface of her palate.
This was an entirely different kind of stimulation.
After a moment, she lowered her tongue. This time, she lifted my cock with one hand and began rubbing my glans directly against her palate.
Unlike her tongue, it was firm yet smooth, as though awakening every nerve on the surface of my glans.
“You can lift the cock with your tongue and rub it against your palate, or you can use your hand to assist, like this.”
Adjusting the angle with her hand definitely created much deeper and more intense friction.
The fourth technique, Texture Variation, was truly an art form.
At first, noona's mouth was full of saliva as she teased my glans, making it wet and slippery, but it gradually began to dry out.
As the friction increased, the stimulation grew slightly sharper.
It would have hurt if she'd started out dry, but my glans had grown somewhat desensitized after I'd been erect for a while, so the timing was perfect.
It felt as though my glans were coming alive with sensitivity once again.
As I received a glans blowjob using the fourth technique, I realized why there was an order to this practical training.
If she'd rubbed my glans with such a dry, rough tongue from the very beginning, with no warning, it would have been closer to pain than pleasure.
But the first three techniques had served as perfect foreplay and thoroughly warmed up my cock, so the sharp stimulation of the fourth technique felt like nothing but pleasure.
Starting gently and gradually building up the intensity—I learned firsthand how important that sequence was.
The final, fifth technique, the Tickle, was the finishing touch.
Noona's pointed tongue tip lightly and rapidly tickled the very tip of my glans, around the urethral opening.
A dizzying sensation, as though I might cum at any moment, shot through my lower back.
I wanted to ask her to keep giving me a blowjob just like this.
Unfortunately, however, she stopped after demonstrating it for everyone.
“That's all. As you saw, when these five techniques are used in order, a man can experience pleasure without pain.”
As soon as noona's demonstration ended, I couldn't help but marvel.
Chaerin's blowjobs had been good in their own way, but this was on an entirely different level.
The skill of a woman who had graduated from Academy University—especially one who had gone on to become a teacher—was beyond anything I'd imagined.
At the same time, I was looking forward to seeing how much better Chaerin would become at blowjobs after learning these techniques. I should ask her to give me a morning blowjob every day from now on.
“All right, then come up one at a time and practice.”
The classroom stirred with feverish excitement.
The female university students waited for their turns, their flushed expressions and twitching lips betraying their excitement at what they had just seen.
They were delighted simply by the thought of being able to take a man's glans into their mouths.
At Iseol noona's words, Chaerin was the first to step forward.
Without the slightest hesitation, Chaerin knelt before me and began stretching her jaw with surprising skill.
The sight of her loosening her jaw by moving it from side to side even had a solemn quality to it.
Chaerin didn't know this, but the thought of her sucking my glans with that serious expression only made me even more aroused.