Position Practice (3)
The glans of my cock was jammed into the sex robot's mouth, forced wide open.
Chuuuuck—
Even though my cock was too big and it was a tight fit, the precum dripping from my shaft acted as lubricant, allowing it to slide in smoothly.
Just as I grabbed the handle attached to the sex robot's head and started to thrust, the body began to shake violently.
Buuul! Barrrruuul!
I could feel the sex doll's entire body trembling as if it were vibrating.
It looked like it was desperately trying to hold itself back.
Looking closer at that expression, I finally understood the reason.
'Ah... it went all the way to the throat.'
My abnormally huge cock had slipped past the sex robot's lips and sunk deep into its throat.
At this point, it wasn't just fellatio anymore—it was iramachio.
But right now, instead of worrying about Han Yejin who had disguised herself as the sex robot, I couldn't control my own rising excitement.
Once I saw her hesitation vanish, she simply grabbed my head with both hands and shook it vigorously.
Buk! Buk! Buk!
“Guek♡! Ugub♡! Ubeup♡!”
Even with the occasional gagging sounds leaking out, I didn't stop my movements.
I just kept pounding my cock into the sex robot in accordance with its designated purpose.
Unfortunately, because my cock was prone to premature ejaculation, the climax came faster than expected.
Vueuub! Vueuuuruul!
The ejaculation that couldn't be held back filled the sex robot's mouth to overflowing, spilling out and drenching its face.
After pulling my cock out of its mouth, I just panted heavily with a sigh.
“Haa! Haa! Hoo... It seems my ejaculation speed is fast as always.”
“Ugh... Guut...”
After the climax, the sex robot began to tremble uncontrollably.
White semen glistened at the corners of its mouth.
And the semen that dripped from the corners of its mouth slid down its neck and onto its chest, creating a strangely erotic sight.
Thinking that the person pretending to be the sex robot—the cold and composed Han Yejin who knew exactly what was happening—was being used like an object, I couldn't control my excitement again.
“Huh?”
At that moment, I realized something.
Even though I had just ejaculated, my cock had become hard again and was erect.
That's when I understood one of Shin Jinho's physical advantages.
This guy might be prone to premature ejaculation, but his libido was rabbit-like in its abundance.
'Oh! This is...'
It was definitely an advantage.
Perhaps even a greater advantage that could offset the disadvantage of premature ejaculation.
Moreover, with such rapid stamina recovery, I could practice for a long time.
That's why Shin Jinho suddenly became curious about the limits of this body.
Just how far could I go?
That's why there was no hesitation in the next action.
'Let's minimize the rest time as much as possible.'
The rest time was referring to myself.
In other words, the moment my cock recovered, I would immediately thrust again.
Sex robot?
After all, it was just a robot right now.
A robot that existed to be used however I wanted.
After making up my mind, Shin Jinho immediately grabbed the handles attached to both sides of the sex robot's waist.
“!?”
The sex robot reacted with a start.
Every single one of those reactions felt strangely cute to me.
That emotion quickly turned into lust, and without hesitation, I pried open its pussy lips and pushed my cock inside.
“Huu! Huu! Huuu♡!”
At that moment, the sex robot arched its back like a bow in response.
Its body trembled violently, and it shook intermittently.
Even though I had only inserted it, it reacted this way.
My guess was that the sex robot, which had just cum, hadn't expected to become erect and ready to be inserted so quickly.
That's why it showed such a reaction.
If Park Jinwook instructor had been there, he probably wouldn't have given such a high score.
Putting aside unnecessary thoughts, I focused on the sex again.
And suddenly, I realized something about the texture inside the pussy.
'It's not a condom.'
During practice, I had been wearing a condom, so I hadn't noticed.
But when I put it in raw, I understood.
There was something covering the inside of the pussy.
From the looks of it, this rubber-like thing was acting as a condom.
Of course, it didn't matter at the moment.
After all, the act itself was pleasurable.
'This time, let's hold out for a while, cock.'
I slowly rocked my hips.
Chik! Chik! Chik!
“Huu! Huu!”
Every time I rocked my hips, the massive breasts swayed dynamically.
While gazing at the swaying breasts, I checked the sex doll's reactions, but it only panted heavily as if trying to endure the pleasure.
Beyond the initial insertion reaction, it showed no other notable response.
'Right, during practice last time it was like that too.'
Right now, Han Yejin was fulfilling her role as the sex practice robot.
From my perspective, I was reviewing the sex robot.
'It said that if you react intensely during evaluation practice, you get a high score.'
So, as a sex robot, it wouldn't react too much.
Of course... even if it didn't react, it was fine.
I was simply enjoying the situation.
While enjoying it, I overcame the weakness of premature ejaculation.
“Ugh!”
After making up my mind, another signal of being unable to hold back came.
I had been trying to hold out a little longer, but it wouldn't work.
I didn't resist and came without holding back.
Vueuuuruul―――――!!
“Huuet!”
Did the warm semen filling the inside of the pussy feel good?
The sex robot reacted with a start.
But that was all.
There was no further reaction from the sex robot after that.
“Hoo...”
I pulled my cock out of the pussy where I had cum.
Chuuuuck—
Semen overflowing from the pussy as I pulled out.
The sight of semen flowing from the pussy including the mouth was no different from a pathetic sex slave who had completely fallen.
Suddenly, I wanted to take a photo of that scene and picked up my smartphone.
Chak—
“Uet—”
Did she react to the sound of the camera?
The sex robot reacted with a start, but subtly.
“Well then.”
After observing the appearance covered in semen once more, I prepared for another round of sex.
Today's goal was to make Han Yejin scream.
***
Time was 8 PM.
By this point, Park Jinwook had started to feel uneasy.
'When I went around 5 PM earlier, it hadn't ended yet, right?'
This was the fourth time.
Park Jinwook headed to the information desk on the first floor of the dormitory.
The first time, he had gone after one hour.
The second time, around 3 PM.
Still, all he heard was that the student Shin Jinho hadn't left a carrier at the information desk.
'Hoo... He can practice to this extent?'
In terms of time, eight hours had passed.
But did he really practice for eight hours?
That didn't make sense.
From the looks of it, he probably hadn't even eaten dinner.
He wasn't at the restaurant.
Park Jinwook quickened his steps, bothered by his unease.
Even if it was eight hours, he thought it should have ended by now.
This time, instead of the information desk, he headed straight to Shin Jinho's room.
Knock— knock—
“Shin Jinho student?”
Park Jinwook standing in front of the door knocked.
Even after knocking, there was no response, so he tried knocking again.
Bang—
The door opened, and Shin Jinho's figure appeared.
“Ah, instructor.”
With slightly damp hair and a towel around his neck, it was clear he had just finished showering.
Park Jinwook, with a bewildered expression, first explained his business.
“Um... I was going to bring the position practice robot, but has the practice ended?”
“Yes. It just ended. Just a moment.”
With those words, Shin Jinho went back into the room, pulled the carrier, and came out.
On the other hand, Park Jinwook couldn't help but admire Shin Jinho's words.
“Hoo... It just ended? So you've been practicing the whole time?”
“Yes, that's right.”
Wait, what?
His enthusiasm was overflowing.
Just what kind of male student could practice position training until this time?
It was honestly unbelievable, but right now, Han Yejin's well-being came first.
“Well, it's good to work hard, but take care of your health and practice.”
“Yes!”
“Then I'll be going. Take care of your body.”
“Yes, thank you.”
Shin Jinho bowed his head in greeting.
Unlike the cute appearance, his straightforward and polite demeanor was truly good.
On the other hand, feeling sorry that a real person had come to Seongmugyo, Park Jinwook pulled the carrier and headed straight to the instructor's changing room.
The instructor's changing room was on the fifth floor of the school.
It was located in the corner of the fifth floor that only instructors could access.
Entering the changing room, Park Jinwook instructor immediately opened the carrier.
At the same time, the sight inside the carrier—the sex doll—left him momentarily stunned.
“W-what!?”
“Ubeu- Ubueub...”
The sex doll was completely covered in semen all over its body.
Most of all, the sex doll Han Yejin was trembling with a start.
He could tell she was having convulsions.
Park Jinwook quickly picked up the sex doll and headed to the shower room installed on one side of the changing room wall.
After rinsing off the semen all over the body with the shower, he gently rubbed the back of the sex doll's head to remove the front mask.
“Ubeup- Fuhwa!”
When the front mask was removed, Han Yejin's face appeared with a stuffy humidity.
“Haa! Haa! Haa!”
Han Yejin took a moment to catch her breath and calm herself, and Park Jinwook patiently waited for her.
Right after, Park Jinwook opened his mouth.
“A-are you okay?”
“Hoo... Yeah.”
Han Yejin answered dully.
But her expression was one of someone who had momentarily lost their mind.
Just a dazed expression, what should I say, an expression as if the act had ended.
After that, Han Yejin spoke in a flat voice.
“The cap...”
“Huh?”
“I filled my mouth with semen. I put the cap on while it was like that so the semen wouldn't leak out.”
“Ah.”
Park Jinwook, understanding Han Yejin's words, carefully put the front mask back on.
After all, semen was precious.
On the other hand, it could be seen that Shin Jinho had made a wonderful response.
Also, Han Yejin instructor, who had tried to save the semen first, was also an elite instructor.
“You took this measure while practicing, right?”
“It was all over my body.”
“...What? Wait? No way...”
Park Jinwook's eyes, which had noticed something, slowly widened.
Because he hadn't noticed due to being too dazed, but now thinking about it, the entire body of the sex robot was covered in semen.
“Yeah.”
In response to Park Jinwook's reaction, Han Yejin nodded and answered.
“Shin Jinho didn't wear a condom.”
“Hoo...”
That fact was shocking.
He had practiced without even wearing a condom.
“That would be like...”
“I thought it was just a position practice robot, so I did that.”
“Even so, practicing without using a condom? Isn't that practicing facing a woman?”
That was Park Jinwook's thought, and Han Yejin was also thinking the same.
The difference between practicing with and without a condom was huge for the men of this world.
Perhaps he was the student who achieved the greatest feat in the history of Seongmugyo.
That's why Park Jinwook continued speaking with excitement.
“Senior, maybe this is possible, right?”
“What?”
“The ideology of our Seongmugyo. The reason Seongmugyo was established.”
Men who didn't avoid women.
The cultivation of men that existed in the distant past.
That was one of the goals and educational ideologies of Seongmugyo, a history that had never succeeded until now.
“Yeah, maybe it's possible. If it's Shin Jinho.”
Han Yejin also agreed with Park Jinwook's words and nodded.
Most of all, that guy had practiced position training without resting for eight hours.
That was an act that was hard even to do against a sex robot.
But caution was necessary.
“But we still have to keep watching. After all, Shin Jinho might have thought it was a sex robot, so it could be that.”
“T-that's right.”
“As long as Shin Jinho wants to review, I'll do almost anything.”
“Yes, I understand.”
“And...”
After thinking for a moment, Han Yejin opened her mouth.
“Call Shin Jinho right away.”
“Huh? For what reason...”
“He probably didn't eat dinner because of the position practice.”
“Ah, instructor, you haven't eaten dinner yet either, right?”
“Yeah. The student cafeteria must have already closed, so I was thinking of eating dinner together at the instructor cafeteria.”
“Um... Is that okay?”
It was a question with some concern.
Even if Shin Jinho was an amazing student, he might not want to.
Han Yejin seemed to guess that and left a gap.
“If you say no, there's nothing we can do. Just pass on the message.”
“Yes, I understand.”