Chapter 18
Even after leaving the academy gate, it still felt as though the alluring scent of Iseol noona's body lingered at the tip of my nose.
I joined the two women waiting for me at the gate and smiled as the warm afternoon sunlight poured down on us.
After having sex, the world looked beautiful.
Even after such intense sex, I wasn't tired at all. On top of that, my mind was as clear as day.
Am I the type who gets healthier from having sex?
“You’re late. What were you doing?”
Chaerin, walking close beside me, asked with a frown.
Subin only looked at me with concern in her eyes.
“It was nothing.”
I brushed it off casually.
It felt awkward to tell my twin sister and childhood friend that I had had sex with my homeroom teacher.
Once we left the academy, the streets began to bustle.
It was already past dismissal time, so most of the female university students had left the area around the academy.
So the people filling the streets now weren't academy students, but ordinary women.
I looked around to see if there were any pretty women. Then I suddenly realized something.
‘…Everyone’s incredibly pretty.’
It really was.
The average appearance of the women walking the streets was on an entirely different level from what I'd known on Earth.
Of course, there were occasionally women with ordinary looks, but most of them were beautiful enough to pass for magazine models.
Their figures were even more incredible.
Everyone must have worked hard to maintain themselves, because the streets were overflowing with breasts you wanted to touch, narrow waists, and asses you wanted to fuck.
On top of that, their clothes emphasized their beauty even more.
Tight dresses that revealed every line of their bodies, miniskirts that barely covered their thighs, and tops with plunging necklines.
By the standards of my previous life, their outfits were almost indecently sexy, but here, they were merely ordinary everyday clothes.
I supposed only pretty women could marry and have children, so naturally only beautiful genes had survived.
Thinking of it that way made this unbelievably arousing sight a little easier to understand.
There could only be one reason the women of this world dressed themselves up so sexily.
To seduce men.
That thought made me look more closely at the two women walking beside me.
“But why do you two dress so plainly?”
Chaerin looked at me as if I were talking nonsense.
“What are you talking about? How is this plain?”
“You’re a little more modest than the other women.”
Chaerin and Subin were dressed neatly.
Of course, their figures were so good that they were attractive enough as they were, but compared to the other women's blatant displays, they were on the modest side.
“Why should I show my body like the other women?”
“Don’t men usually like that?”
“What’s the point of another man liking me?”
Chaerin turned her head away with a pout.
She looked just like a cat that only wagged its tail for its owner, which made me laugh.
“What about you, Subin?”
“I-I’m the same as Chaerin… There’s no one in particular I want to show myself to….”
Subin's voice dwindled away, but I understood what she meant well enough.
Their thoughts were obvious. They meant they had no need to look good for any man other than me.
Thinking of Subin reminded me of the word ‘HSDD’ I'd heard in the infirmary. Subin seemed to have that condition.
I considered asking her about it, but with Chaerin beside us, it felt awkward.
Judging by her reaction during the physical examination, Subin seemed reluctant to acknowledge that she had HSDD.
Before long, we reached the familiar neighborhood. We stopped in front of Subin's house.
“Well, see you tomorrow.”
“Yeah. Sihyeok, let’s go to school together tomorrow, too.”
Subin said it with a shy smile.
I nodded, and Subin went inside, glancing back several times as though reluctant to leave.
As soon as we entered the house, familiar air enveloped us.
I went straight into the bathroom and took a shower.
Once I had washed away the scent of Iseol noona and the smell of semen, the fact that I was alone with Chaerin again really sank in.
When I came out of the shower, Chaerin was lying on the mattress and staring at me.
She looked as though she had something to say, but she didn't speak first.
‘Come to think of it, she said she'd take care of me when we took our student ID photos.’
I remembered that Chaerin had seen my erect cock earlier and promised to take care of me at home.
Even after having intense sex with Iseol noona twice, my cock was still raring to go.
I wondered how the original owner of this body had handled his sex drive.
Had he been involved with so many women that he'd received so many messages from them?
Wondering what kind of sexual relief Chaerin would give me, I lay down on the mattress beside her.
Fellatio? Handjob? Paizuri?
While pondering that, I glanced at Chaerin.
“…What are you looking at?”
Having met my gaze, Chaerin seemed too embarrassed to face me, so she subtly turned around and showed me her back.
Naturally, I could now see her from behind.
Chaerin was looking at her phone with her back to me.
The blanket was draped only lightly over her legs, leaving her figure fully visible.
The dolphin shorts she wore comfortably at home hugged the round lines of Chaerin's buttocks.
Maybe she had pulled them up, because the flesh beneath her buttocks was almost visible.
I wanted to put my hand right there.
Maybe because I had now had sex a few times, my thoughts had become a little bolder too.
When I lifted my gaze, the light pink strap of her bra showed clearly through her thin white T-shirt.
I silently approached Chaerin from behind.
Then, without hesitation, I hugged her from behind and grabbed her breasts with both hands.
“Ah…?”
Chaerin's startled shoulders hunched.
The breasts in my hands felt different from Iseol noona's.
If Iseol noona's breasts, toned through exercise, had boasted a firm, springy resilience, Chaerin's were less springy but softer and more supple.
If someone asked which I preferred, it would be hard to answer. They were both exquisite tits I'd want to touch every day.
“I’ll take care of you now.”
At my sudden whisper in her ear, Chaerin's body flinched reflexively.
“…Hey. You could just say it. Why whisper in my ear?”
Chaerin spoke as if she were annoyed, but I clearly saw her ears turn bright red.
It was cute how desperately she tried not to show that she was happy.
“I’m too lazy to stand up. Give me a handjob while we lie down.”
At that, Chaerin pretended to be reluctant, then turned around and lay facing me again.
Then she saw my cock after I had tossed off my underwear and swallowed hard.
My cock, which had been erect since I touched her breasts earlier, throbbed eagerly as though it wanted to enter her pussy right away.
“…It’s big even looking at it again.”
Chaerin muttered in a small voice.
Chaerin reached out with both hands and carefully wrapped them around my cock.
Since she was lying down, her arm movements were restricted as she gave me a handjob.
So the handjob she gave me was clumsier than before, like a beginner's.
Of course, it was incredibly arousing because it was my pretty twin sister—not my own hand—touching me.
In that state, I slipped my hand beneath Chaerin's top.
I deliberately ran my hand slowly up her soft skin.
When I slipped my hand inside her bra, her soft breasts filled my palm.
I flicked her raised nipples lightly with my fingers.
“Hey, why are you touching my nipples again?”
-Pinch
“Ngh….”
A moan escaped Chaerin's lips.
“Were your breasts always this sensitive?”
“Hey, they’re not sensitive! They’re just like everyone else’s…!”
“Hmm, really? Then how do you masturbate? With your breasts? Or your pussy?”
“Why are you asking that, you pervert!”
“They say you get rutting sickness if you don’t masturbate. I heard it in the infirmary.”
“……”
“Did a lot of vaginal lubrication come out during your physical examination today?”
In response to my relentless, blunt questions, Chaerin barely managed to answer while mixing moans with her snappish replies.
“Not much came out…!”
Not much, my ass. I thought my hand was going to be soaked earlier.
I smiled as if she were cute and stimulated Chaerin's nipples more intensely.
As we continued talking dirty, the atmosphere grew hotter and hotter.
“Hngh… Ah! Ngh!”
My flicking her nipples made Chaerin's pelvis twitch, and before long she bit down hard on her lip.
Thus, while giving me a handjob, Chaerin buried half her face in the pillow and reached her first climax.
“Hwoo….”
She looked adorable burying her face in the pillow, as if she were too embarrassed to meet my eyes while coming.
But I still hadn't ejaculated.
“Keep going.”
At my matter-of-fact command, Chaerin, panting from her orgasm, grabbed my cock again.
Then she began moving her hand, now suitably slick with precum.
Of course, I continued fondling Chaerin's breasts.
When I pinched and tugged her fully aroused nipple, she let out a sound like “Hieek…!”
In the end, only after Chaerin climaxed violently a second time did I finally lose control and spill my semen.
-Pffft! Splurt!
“Ah…!”
Chaerin, belatedly coming to her senses, put her palm in front of the tip of my glans.
But because the amount of semen was so large and Chaerin had been lying down, it splattered all over her clothes as well.
A moment later, Chaerin's thin white fingers brushed past my urethra.
Chaerin carefully wiped away every last drop of semen.
But I felt it was a little regrettable to end things like this.
I could take care of Chaerin too, couldn't I?