Chapter 17
Before the intense afterglow of our first sex had even faded, I turned Iseol noona over and made her lie facedown.
The soft body that had been held in my arms, breathing heavily until just moments ago, helplessly rolled onto its stomach.
“Ah, huh?”
“Noona, you can do it one more time, right?”
“W-wait, I just came…!”
Noona called out to me in a voice mixed with embarrassment and lingering pleasure.
But instead of answering, I firmly grasped her slender waist, slick with sweat, with both hands.
Noona’s body, which had just received my semen and been lost in her first-ever sexual orgasm, didn’t even have the strength left to resist.
Her white, smooth back, elegant spine, and voluptuous buttocks were fully exposed.
It was a completely different female posture from the missionary position, in which we faced each other.
“Hngh….”
A pained sound escaped noona’s lips. It was a sultry moan mixed with exhaustion and anticipation.
I brought the cock that had just ravaged noona’s vaginal walls back to the entrance of her pussy.
The lingering heat, her vaginal fluid, and the large amount of semen I had just released mixed together, making wet, squelching sounds.
When I lightly rubbed her with my glans, her pussy twitched and spilled even more vaginal fluid.
-Squelch!
Taking her from behind gave me an entirely different sensation.
With it buried all the way to the base, the parts stimulating my cock were completely different from when we were in the missionary position.
The fact that I couldn’t see noona’s expression only stimulated my imagination further.
And my attention focused on the pale buttocks spread out before my eyes and the asshole beneath them.
“Haa, hngh…! Ah…!”
Noona’s shoulders trembled faintly.
I deliberately began moving my hips deeper and harder than before.
-Slap, slap, slap!
The sound of flesh colliding with flesh rang out loudly.
“Mm, mm…! S-Sihyeok! It’s too deep…!”
A cry of pleasure burst from noona’s lips.
The sensation of my cock directly poking her cervix left noona unable to think straight.
I was no different.
The flesh of her buttocks bouncing whenever my thighs slapped them, and her pussy clamping down hard around my cock and refusing to let go, felt insanely good.
“Noona, use what you learned at the academy. Try squeezing your pussy.”
Though my mischievous demand made her struggle, she tensed as she had been taught.
“Hngh… like this…?”
Her pussy writhed and squeezed my cock tightly.
“Oh…!”
It was an incredible stimulation. In return, I pressed my glans firmly against her cervix.
“Hng…!”
With her face buried in the pillow, noona gripped the bed.
As I kept pounding her, noona instinctively squeezed her pussy like the academy graduate she was.
It was a female technique for pleasing men, something she must have learned countless times at the academy.
Her vaginal folds writhed, gripping my cock tightly as though they never wanted to let it go.
So Chaerin learns things like this, too?
Every time noona squeezed, my fully erect cock ruthlessly rubbed against her inner walls.
“Hic…! Ah, aah!”
Before long, noona’s grip on my cock loosened slightly.
Even a trained female apparently couldn’t withstand the stimulation of a real cock penetrating far deeper than in the missionary position.
Seeing techniques honed without a cock crumble before pleasure gave me an incredible sense of conquest.
Noona’s reaction was so cute that I deliberately pressed my glans firmly against her cervix repeatedly.
“Haa, ah! Sihyeok, wait, it’s too deep…! Not there, please…!”
Noona cried out as if begging me, but I didn’t stop.
I gripped her white shoulders, pulled her toward me, and plunged my cock into her.
“Haaang! I’m, I’m coming…! I’m coming again…!”
After only a few thrusts, noona screamed in orgasm once more.
Her pussy spasmed violently, repeatedly squeezing my cock hard before releasing it.
Her hot inner walls writhed like a living creature, as though trying to milk the last drop of pleasure from my cock.
The tremendous pressure sent my own urge to ejaculate surging to a fever pitch.
“Ugh…!”
Since I had no reason to hold back, I poured hot semen inside noona once again.
-Gush, gush!
“Haaah, haaang…!”
Noona collapsed onto the bed, letting out a moan that was almost a howl.
Even after I finished ejaculating, I left my cock inside noona for a long while, leaving my hot traces within her.
Feeling her pussy twitch around me, I realized that I had finally lost my virginity.
How much time had passed?
We lay side by side on the bed, breathing heavily.
The sheets were damp with the traces of our fierce sex, and a thick scent of sweat and bodily fluids filled the room.
Just then, something caught my eye.
A faint bloodstain spread across the white blanket. It was proof that noona had been a virgin.
That fact gave me a strange sense of conquest, along with an equally strange sense of responsibility.
I had become noona’s first man.
After looking toward me for a long while, Iseol noona cautiously opened her mouth. Her voice was slightly hoarse.
“…Sihyeok.”
“Yeah, noona.”
“…How was it?”
“Huh?”
“Was I… good?”
Her voice was so quiet it seemed to shrink into itself with embarrassment.
Noona, a woman, was asking a question usually asked by men.
The sight was so fresh and cute that I burst out laughing without meaning to.
“Pfft….”
“W-why are you laughing…! Was it no good…?”
Noona looked at me with an expression as if she might burst into tears at any moment.
Her innocent appearance only made it harder for me to stop laughing.
I shook my head and pulled her tightly into my arms. Her soft, warm body fit snugly into my embrace.
“No. It was incredible. Much better than I imagined.”
My heartfelt answer made noona’s face light up.
“Really? What a relief….”
Seeing noona sigh in relief, I felt my lower body grow hard once again.
The woman I had happened to sleep with possessed a charm that seemed to have no end.
Noona hesitated for a moment, then fidgeted beneath the blanket and reached toward my cock.
“You got dirty. I’ll clean you.”
Then she lowered her head and took my cock into her mouth.
-Slurp.
Her warm, soft tongue diligently licked my soiled cock.
“Hoo….”
Noona licked my cock for a long while, and only raised her head after confirming that it was clean.
The slight glisten around her mouth was unbearably lewd.
“I’ll make sure to take my birth-control pills. So don’t worry. I’m not going to trouble you….”
Only then did I realize that I hadn’t thought about contraception at all.
I had been so aroused that I’d forgotten the most important thing.
“Thanks, noona.”
“You don’t have to thank me…. I did it because I wanted to.”
Noona smiled shyly and lightly kissed my cheek.
At that exact moment, the phone in my pocket vibrated briefly.
[Chaerin: Hey, where are you? Aren’t you coming yet?]
It was a text from Chaerin.
“I think I should go now.”
“Already…?”
A look of disappointment crossed noona’s face.
I wanted to have sex with her a little longer, too, but a lot of time had already passed.
I put my disappointment aside, stood up, and gathered my clothes.
“Um, Sihyeok….”
Noona urgently called me back as I was about to leave the room.
“Before you go… could you hug me one more time?”
I couldn’t refuse when noona asked with her face flushed in embarrassment.
I approached noona and gently embraced her.
Noona buried her face in my embrace and stayed still for a long while.
“See you tomorrow.”
“Yeah, see you tomorrow, Sihyeok.”
* * *
Late that night, Iseol sat on the sofa in her apartment living room, rapidly typing something on her laptop.
The academy’s neat and gentle teacher was nowhere to be seen.
She wore a stretched-out, shabby tank top and nothing but panties. She wasn’t wearing a bra, so the outlines of her nipples showed clearly through the tank top.
Unlike her normally gentle expression, her face held a cold, emotionless air.
On the screen, a lengthy report was listed beneath the title ‘Kim Sihyeok Observation Report.’
[Subject: Kim Sihyeok (ID: M-017)]
[Observations: His sex drive is excessively high compared to the average male. He does not reject sexual advances from women; rather, a tendency to actively initiate relationships has been observed.
No unusual behavior indicating avoidance of women has been observed to date. Additional data were obtained through direct physical contact (sexual intercourse) with the subject.
A strong tendency to seize the initiative when initially forming relationships. This appears to be related to the subject’s desire for dominance and is presumed to be connected to his preference for sexual positions.
Continuous observation and data collection planned.]
After finishing the report, she encrypted the file and sent it.
An ID photo of Sihyeok was attached in one corner of the file.
In the photograph, Sihyeok was smiling innocently, as though he knew nothing.
Iseol closed the laptop and went out onto the balcony.
She habitually took out a cigarette, held it between her lips, and lit it with a Zippo lighter.
With a hiss, a red flame sprang up.
White smoke scattered into the night air.
Her gaze was fixed on the window of a house not far away.
It was the house where Sihyeok lived.
‘I wonder if that kid is having sex with his younger sister by now.’
At that thought, the sensations of the first sex she had shared with Sihyeok came vividly alive throughout her body.
The firm, hot sensation that had bored into her deepest place. The rough breathing that had tickled her ears.
Her face grew hot.
She brought her fingers over her panties and gently rubbed.
Even forgetting that she was on a mission, she was already wet there.
‘Kim Chaerin… lucky. To think she can be with a man like that every night.’
A hot rush surged up from her lower abdomen.
Iseol stubbed out her cigarette in the ashtray and went into her room to relieve her sexual desire.
As the door closed, her moans faintly melted into the night sky.