episode_0203

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If you were to name the biggest difference between humans and animals, 99 out of 100 would say it’s “reason.”

Appetite.

The need for sleep.

Sexual desire.

Unlike animals, which live solely by instinct, humans endure their own discomfort and know how to regulate themselves with cold rationality.

Most of the time, this is explained with fancy terms like “socialization,” but…

I don’t care about any of that.

What I want to say is—

“…Hahh, huff…”

This.

Not rational.

Not clean.

Not socially acceptable.

Just someone who wants to indulge in things that feel purely, selfishly good—

People call them beasts. Dogs.

…But don’t those same people secretly have their own shameful bucket lists?

That’s what I think, anyway.

Otherwise—

“Mmph, chuup…”

“…Unnie, wait…”

Lee Hayoon, the closest thing to “normal” among us.

Just because she’s felt her little sister’s jealousy a few times,

she gets drunk on this twisted sense of superiority.

Even as her own sister tries to pull her boyfriend’s pants and underwear down right beside her,

she doesn’t stop her.

No—she even moves aside slightly.

Eyes tightly shut, she tangles her tongue with mine.

Trying desperately to get more attention than her sister,

she strokes my body lightly, testing my reactions.

It was Lee Jiyoon who finally yanked my underwear off,

but before her sister could touch me, she gently caressed the head of my cock first.

Only then did she pull her hand away, as if giving her sister permission to touch.

…Then wiped the precum off her palm onto her own pajamas.

As if.

It’s not like she’s some brain-dead animal soaked in lust.

“…Look at how hard it’s already gotten. Ugh…”

On a bed too small for three people to roll around comfortably.

While Hayoon, her hand under my shirt tracing my stomach, is pulled into a half-sitting kiss, I feel a pleasant warmth below.

Huu—

A deliberate sigh, clearly meant to gauge a reaction.

Bleh—

A deliberate, exaggerated sound of spit—whether from me or her sister—

meant to be heard.

…Unnoticed by Hayoon, still busy kissing,

the sensation of Jiyoon quietly licking the now-clean tip of my cock,

covering it in her own saliva like a cat.

Then, squelch, squelch—

Because Jiyoon’s fingers, slick with spit,

are stroking all the way down to the base.

Because Hayoon, not wanting to lose to her sister, is desperately tangling her tongue with mine.

“…Unnie, unnie.”

“…Hngh…, …what?”

“…Look at this. Seo Woojin’s cock…”

“…”

“It was already a little longer than my handspan before…, …but now? Not even close. …Pfft…”

Even as her sister stares right at her,

Jiyoon measures her boyfriend’s length with her own hand instead.

My cock, which had only been slightly swollen earlier,

now feels rigid down to the shaft and base,

as if all the blood in my body has rushed there.

“Unnie, have you ever seen it like this before?”

“…Y-yes…?”

“I knew it. …You’ve never seen it either.”

“…”

“…What else should I do? Anything you want from me? …Ah, want me to rub it between my tits?”

“…Don’t talk to Woojin like that.”

“You’re telling me not to talk to him? Why? I’m just trying to figure out his preferences.”

“…Just don’t. …Only have sex and leave.”

“Tch……. Ughhh…”

Jiyoon, who had been pressing her breasts together in a suggestive gesture, pulls a condom wrapper from her pocket.

She tears one open and smoothly rolls it over my grotesquely erect cock.

Then, as if preparing to ride me, she grinds the tip against her entrance before—

suddenly, as if struck by a fun idea—

“…Hey, Lee Jiyoon…!”

Instead of slamming her hips down immediately,

she collapses forward, hugging me tightly and rubbing her face against mine.

Ignoring the fact that her sister’s hand, which had been gently stroking my stomach moments ago, is now trapped between our bodies.

Maybe she planned it that way.

…Acting all composed,

while pressing her body against mine,

letting me feel the loud thump-thump of her racing heart.

“Seo Woojin, can you move instead?”

“…”

“Rather than me awkwardly rocking my hips… …it’d feel better if you just fucked me hard like last night…”

Even though her sister is listening right beside us.

Is she talking about what happened on the living room sofa last night?

…Or the early morning when we had sex quietly, muffling our sounds?

Purposely making it ambiguous.

“…Then get in position like last time.”

“…Okay.”

Hayoon doesn’t know.

She just keeps making that pouty face.

“…”

So only I can hear,

Jiyoon buries her face deep into Hayoon’s pillow,

stuffing the blanket her sister had been using under her stomach,

arching her back, ass in the air.

…The exact same position she took when we cheated on her sister at dawn,

now begging to be fucked right in front of her.

Aren’t you

getting excited too?

“Noona. Just a sec…”

“…Ah, okay…”

…You crazy bitch.

All I knew about her was that she really liked games.

But once I peeled back the layers, she was just some girl with an inferiority complex toward her brighter, more outgoing sister.

A girl who even practiced sex with her sister’s boyfriend.

…All because she wanted to show off fucking me to her sister.

Even agreeing to a threesome.

No—actively helping with it.

A complete lunatic.

Stepping behind her,

I yank her pitch-black dolphin shorts down to her thighs,

exposing her snow-white ass.

…No foreplay at all,

just her panties, already soaked through with slick, clinging to her skin.

Grabbing a handful of that ass with one hand.

“…”

To her pure, innocent sister—

…No, calling her “innocent” doesn’t feel right anymore.

The sister who wants me to acknowledge that she’s better than her little sister.

Held from behind,

quietly, so no one else hears,

her fingers teasing her own chest,

the same tongue that was just kissing me now tracing her neck.

“…Hih, hng…!”

Right in front of her sister.

As Jiyoon spreads herself open with two fingers,

…I don’t just push in the tip.

I shove it all the way.

To the root.

Every last inch.

So deep her ass cheeks flatten from the force.

“Hhhaaahk……? Hah…. …Nngh…?”

Normally, I’d ease her in first, but today, I go straight for her cervix, slamming against it without mercy.

Just moments ago, she was only focused on teasing her sister, but now her hips jerk, her knees buckle, her walls clench around me.

I wonder how good it’d feel to push her until she’s babbling incoherently, until she passes out.

Lost in lust-fueled thoughts, I pull out slowly with a wet shllk.

If I don’t, this moment will just turn into another tender session with Hayoon, no different from usual.

To provoke the increasingly unhinged Hayoon further,

I move deliberately.

Slowly.

So she can memorize the shape of my cock.

“…”

I planned to hold back.

But then—

“…Hey, Woojin. Why aren’t you doing it like you do with me?”

Even as Hayoon whispers this into my ear, her lips still brushing my neck.

“Are you going easy on Jiyoon because she seems fragile…?”

“…Yeah.”

“With me, you always fuck me like you’re trying to kill me, like you want me to cum until I break…”

“…”

“Isn’t that more your style? Not this… gentleness.”

“…”

“…Last night, when you came inside Jiyoon until she was overflowing, you fucked her like that too.”

Every time my cock drags against her walls.

Every time I grind against her cervix.

As Jiyoon buries her face in the pillow, whimpering “Hihk, hng!” through light orgasms,

Hayoon’s voice drips with malice,

purposely loud enough for her sister to hear.

“…With me, you don’t have to hold back like this…”

“…”

“If we use two condoms, can we go right after…?”

Hayoon, clinging to me from behind,

slips her hand between Jiyoon and me, where slick is dripping, and strokes my cock.

…Marking my body, mid-thrust with her sister,

with her own scent,

licking my shoulders and neck with wet, hungry laps.

I was going to endure it until you got used to it.

But Jiyoon.

You’re the one who—

“…Hey, Seo Woo, jin…. Like last, night…, fuck me, like a, beast…, you said, it’s, okay……♡”

—told me to.

Why pretend to be rational when we’re all the same kind of animal?

My patience, already on the verge of snapping, finally gives.

“…Ah.”

I shove Jiyoon’s floating hips down, pinning them.

Pushing Hayoon off me with a hand to her pelvis, sending her tumbling back.

…Bracing my arms against the bed,

“……! …?! ……, …♡ ………♡”

I press my lips to Jiyoon’s ear, her face still buried in the pillow,

hot breath spilling out as I—

just like last night, when I fucked Hayoon beneath me,

just like at dawn, when we muffled our moans—

start slamming into her hard enough to make the bed thud.

“…Wah, wow…”

Maybe because she’s only ever felt it indirectly, never seen it from the side.

Or maybe, like Jiyoon said, because she’s only watched porn like this.

A tiny gasp slips out between the smack-smack of skin.

…Shouldn’t it be normal to stop your boyfriend from fucking your sister?

But she just stares blankly, swallowing hard, and that drives me insane.

So I lower myself further, sliding an arm under Jiyoon’s neck, pulling her head tight against me.

‘……Fucking pervert, bastard…♡’

Her ragged, pleasure-drunk panting spills directly into my ear.

Even as she calls me a pervert,

her hips keep lifting, taking me deeper,

and with every smack of my pelvis against her ass,

I hammer into that same sweet spot—

the one her sister has—

over.

and over.

“Hey, yoohoo…. Like, that… fuck me, harder… you still, can’t reach, my… womb…”

Even in this state,

she whispers teasingly.

I bite her earlobe in response.

“…If we’d gone raw…… it would’ve, felt… better……”

Contrary to her words, her tongue flicks out, soaking her sister’s pillow with drool,

gulp, gulp

as she obediently swallows.

I watch her,

“…Ah, …hng, c-close……. ………♡”

She was pretending to be fine earlier,

but the moment I grind hard against her deepest spot, her back arches, her tongue tangles, and she cums with a broken moan.

Her scent, intensified by how tightly she clings to me, fills my lungs.

Smack, smack, smack.

Right in front of Hayoon,

I fuck Jiyoon like I’m trying to knock her up,

until finally—

“…Tchup.”

Splurt, bluuurgh…

Blorrrgle…

Only after I’ve already started cumming does Hayoon finally come closer.

…Bracing my arms against the bed again,

I kiss her deeply,

letting our tongues tangle.

“……Nngh…?! …Hn…”

“…”

Then—

the still-full condom,

barely holding back a flood of cum,

I tie it off and,

making sure Hayoon sees,

toss it next to Jiyoon’s head.

The reason Hayoon whispered those provocative things to me earlier.

The reason she was so fixated on teasing me.

…It’s obvious—because of that thing Jiyoon hinted at during dawn.

“…”

Whether I really get off on their little lesbian act.

Or if it’s just the threesome dynamic that affects me.

Is that why I came so much last time?

If I do something like this again,

will I be able to make them cum as hard as I did on the living room sofa?

“…Noona. Move aside for a sec…”

“…”

“…Noona?”

“…”

“Hayoon noona.”

“…Ah, ah…! O-okay, here…?”

“Yeah. The condom wrapper… huu… was over there.”

“…Ah, I see……”

She was obviously testing me.

Because she’s curious.