episode_0056

56

“Oh, today…”

“……”

“…Foreplay. How to do it… that kind of thing.”

How could I train Lee Jiyoon to suit my tastes?

How could I completely dominate Lee Jiyoon?

How could I make sure I was the only one left in Lee Jiyoon’s mind?

Despite my gentle smile, my eardrums were filled with nothing but wicked thoughts as her voice, laced with embarrassment, whispered into them.

…Yesterday, when we were briefly on the phone.

Even though she could hear all those suspicious rustling sounds,

she trembled in an unusually sweet voice,

asking pointless questions like whether I liked cats, just to hear my voice.

And then, through the receiver, I heard it—soft, stifled gasps.

Was it because of that?

The voice murmuring beneath me sounded lewder than ever before.

My cock was already stiffening.

“W-Well, yesterday felt kinda rushed… So this time, let’s take it slow…”

“Slow… So, you mean starting with the foreplay you mentioned?”

“…Mhm.”

…I’m going insane.

A little sister teaching her older sister’s boyfriend how to do foreplay under the guise of “sex practice.”

If I posted online asking, “What the hell is this girl even doing?”

I’d definitely get some obvious answers.

Something like, “Recommend me a hentai with this plot.”

Or, “She’s just asking for it.”

What should I do?

The heroine of a hentai with that exact premise

is right in front of me, offering to teach me foreplay step by step.

“…Was I acting weird yesterday?”

“You were so turned on, you acted like a total idiot…?”

She spat it out with a tch before forcing a relaxed smile.

What the hell does “acting like an idiot” even mean?

Does she mean she’d rather I yank her clothes up,

pull out my cock,

give her a thorough blowjob,

then pound into her thighs like an animal

and paint her pristine stomach with sticky cum—

instead of hesitating like a dumbass and making her frustrated?

…I don’t get it.

In front of a little sister who gets off on doing bad things with her sister’s boyfriend…

No. This is wrong.

I should stop here.

This bullshit is just going to piss me off even more.

And it’s not like this even fits your tastes.

“Like an idiot… I see.”

“So today… Oh, wait. I have something prepared…”

As if worried the neighbors might hear, Jiyoon, who had been whispering quietly, slipped out of my arms and headed toward the computer desk.

Beneath her pajamas,

I caught a glimpse of her hips—similar to Lee Hayoon’s—for just a moment.

Still in her pajamas, Jiyoon rummaged through the desk and pulled out…

“Why do you have that now?”

“…Don’t you remember the kiss from yesterday?”

A pitch-black cloth mask.

The exact opposite color of her white hair.

The same shade as the faint remnants of color hidden beneath her hair, like a bridge.

“If I wear this, we can at least practice the timing for kissing…”

“We need to practice timing? You’re already kissing your sister anyway.”

“…Sh-Shut up… Just do it if I say so.”

With half her face covered by the mask, Jiyoon settled back beneath me.

To practice sex for her sister.

To practice foreplay for her sister.

Spouting nothing but excuses to justify herself,

when in reality,

she just wanted to drown in the thrill of betrayal.

“And yesterday, you… only touched my chest a little and didn’t do anything else, right…?”

“…Yeah. That’s about how it felt.”

“Today… I-I mean… …”

“…What?”

“Y-You can touch… there.”

“……”

“…It’d be good to know roughly how to do foreplay…”

“……”

See?

Under the pretense of “sex practice,”

claiming it’s for her sister,

but then giving me permission to touch her pussy—

there’s only one obvious reason for that.

She wants to feel good.

She wants to masturbate again today.

“Of course, um… No fingers inside. N-No pinching my clit. No deliberately playing with my pubes. No continuing if I tell you to stop. No licking. And…”

“…Pfft…”

Unable to hold back my laughter, I must’ve annoyed her.

Jiyoon, who had been rambling for a while, weakly punched my chest a few times.

“Why—why are you laughing? Don’t just half-listen, take this seriously…!”

“If you’re gonna ban that much, wouldn’t it be better to just briefly list what you are okay with, Jiyoon?”

Struck right in her weak spot, Jiyoon immediately fell silent.

Laughing playfully above her, I lightly brushed the buttons of her pajamas and asked,

“Anyway, you said we should take it slow with foreplay today, right?”

“…Yeah.”

“Then I’ll just do whatever I want for now. If something feels off or you don’t like it, say so.”

“…W-Whatever you want…?”

“Memorizing every single thing you don’t like is too much for me. I’m not exactly a genius.”

“……”

After a long moment of eye contact,

Jiyoon’s head gave a small, hesitant nod.

Idiot.

You shouldn’t give permission so easily.

Especially with guys—they’ll misinterpret even the smallest things.

You might’ve genuinely meant it as just allowing me to do foreplay however I want,

but to a guy, it looks like you’re giving the green light to go all the way.

Even if you act like this with me, you shouldn’t do it with other guys.

CZ—that bastard probably got hooked on Jiyoon because of this side of her.

Brushing away a few stray hairs stuck to Jiyoon’s nose, I slowly began unbuttoning her pajamas.

“……”

Her sister’s boyfriend’s hands, undoing every button of her pajamas.

Unlike yesterday’s plain look, a pristine, pretty bra.

Unhooking it with a click, exposing her soft breasts completely to me.

One hand gripping her barely manageable chest, I leaned in closer, pressing my lips against hers through the mask.

Jiyoon, who closed her eyes without resistance as if everything was fine,

instead of pulling away in embarrassment,

lifted her chin slightly.

To make the kiss prettier.

To press herself more insistently against my lips, barely touching through the mask.

To fill herself with her own depraved desires.

But then—

“…Five points. Idiot.”

“Five points? For what?”

“Foreplay… …Five out of ten.”

Jiyoon’s lips, slowly pulling away, spat out the blunt words from behind the mask.

“W-Who the hell likes it when you just grab their chest out of nowhere and kiss them?”

“……”

Lee Hayoon.

And you.

Your sister’s the same.

You’re the same.

Judging by your reactions, it doesn’t seem like you actually dislike it, but for some reason, both of you insist you do.

Should I just chalk it up to sisterly resemblance…?

Glaring down at Jiyoon with dissatisfaction, I bluntly asked,

“You liked it, didn’t you?”

“W-What?”

“Yesterday. Today. You were rubbing your thighs together.”

“…Y-You’re imagining things…! Anyway, you should’ve at least complimented me, called me pretty, or just kissed me until we were both turned on…”

“Then let’s check.”

“…Check what?”

“You already said I could touch your pussy, so.”

“W-Wait…! Seo Jin, that’s not—!”

Visibly flustered, Jiyoon desperately clung to my arm.

Pinning her hands down a bit roughly against the bed, I yanked her sleep pants down.

Enough to see the butterfly knot tied at her waist.

Enough to catch glimpses of her white panties.

As the pants slipped past Jiyoon’s hips, which had been struggling not to let them go,

a stark gray stain became blatantly visible against the white fabric.

“What’s this, Jiyoon?”

“……”

I could see with my own eyes just how wet she was, but Jiyoon couldn’t.

But she could feel it.

How soaked her panties were.

How it must look to someone else’s eyes.

“You said I was imagining it. That you weren’t rubbing your thighs.”

“……”

“You said no one likes it when you just grab their chest and kiss them out of nowhere?”

“……”

The mouth that had been chattering about five points and compliments and kissing just moments ago clamped shut.

Her cheeks and ears, visible beside the mask, flushed red,

as she desperately avoided my gaze.

Tormenting Jiyoon like this was fun in its own way,

but honestly,

my cock felt like it was about to burst.

“…You crazy bitch.”

“…Nngh…!”

Tossing my sweater onto the floor,

now wearing just a black short-sleeved shirt that clung to my muscular frame,

I lay down beside Jiyoon

and slid my hand between her thighs.

“…Turn your head and look at me, Jiyoon.”

“…N-No…”

“You said you’d help me practice. Foreplay practice. And sex practice.”

“…You’re just gonna tease me…!”

“I won’t. I’ll just kiss you.”

“Then what was all that just now…?”

“You were cute, so I couldn’t help it.”

“…C-Cute…? My sister’s the cute one, not me…”

“You get this wet just from a kiss, throw a tantrum about five points, and you’re not cute?”

“…Shut up…”

As I lightly pulled my fingers away from her panties, a thin string of slick connected them.

Gently pressing against her clit, I listened to Jiyoon’s stifled moans for a moment

before slipping my arm behind her back.

“Nngh… Mmph…!”

Pulling her panties aside,

I scolded her clit directly,

holding the back of her masked head firmly

as I forced our lips together.

“Mmph… Nn…!”

…I tried my best to scold her gently, the way she’d like.

But maybe the stimulation was too much.

Her thighs kept squeezing together as if telling me to stop.

Judging by the way her hips twitched occasionally, it didn’t seem painful or unpleasant.

How should I make her feel even better?

It was hard to think straight with all the blood rushing to my cock.

Resorting to using my leg to pin her thighs down,

I rubbed her slick, slippery clit between my fingers over and over.

“Hah… Hah… Nngh…!”

Jiyoon’s gaze grew hazy, as if drunk, staring up at me.

Breathing heavily through the mask, her hips trembled uncontrollably.

In less than a minute,

she buried her face against my chest,

rubbing her forehead against me

until she came completely.

“Jiyoon.”

“Hah… Hah… W-What…?”

“You’re way more sensitive than I thought. Getting off on foreplay from an idiot.”

“…Shut up…”

I’d figured out her preferences and played along,

but Jiyoon would never know.

All that would remain in her mind was the memory of “Seo Jin’s fingers felt amazing.”

Smirking, I started teasing her clit again.

Once.

Twice.

Three times.

Four times.

Until Jiyoon was completely honest.

All the way.

“Ngh—?! Nn…! Ugh…!”

With a kiss, separated only by the mask.

With her hardened nipples being toyed with.

After a few more rounds of the same treatment,

small wet spots began forming on the bed

every time Jiyoon’s hips jerked.

She didn’t climax hard enough to squirt,

but the amount of slick dripping down was telling.

“Hah…”

“Ngh… S-Stop… P-Please…!”

After a long kiss, our lips finally parted, the mask damp with our mingled breath and saliva.

Jiyoon, dazed, kept muttering stop, stop like a broken record.

Just as I started torturing her sticky clit again,

before she could regain her senses,

I bit down on the mask

and pulled it up over her eyes like a blindfold.

“Nngh…? Mmm…! Hah…!”

So I could kiss Jiyoon properly, tongues entwined.

“Hey, this is just… kissing…”

“Covering you in spit.”

“…Huh?”

“Covering your tongue in spit. Idiot. You called me an idiot earlier…”

“……”

“…Open your mouth again.”

So Jiyoon couldn’t think too deeply.

So I wouldn’t feel as guilty not seeing her face.

So I could amplify the thrill of betrayal even more.

Without protest, Jiyoon hesitantly parted her lips,

letting my tongue invade freely

as she whimpered cutely.

“Mmm… Nn…”