episode_0386

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Sex.

I don’t remember exactly when I first encountered that word.

I only realized what “sex” meant after I started wearing a school uniform, so I’m guessing it was around middle school.

But maybe because my first exposure to the adult world was more shocking than I’d thought.

One thing, though—just like how I remember realizing it after putting on a uniform, the exact moment I learned that word is still etched clearly in my mind.

It’s not as grand as it sounds.

In middle school, during idle chatter among friends, the topic somehow drifted there.

Innocent me, not fully grasping it or getting a proper explanation, cocked my head in confusion before—

Going home, searching on my phone what “sex” and “semen” meant…

And well, from then on, it just played out like this and that.

Probably the same path most ordinary girls take—or so I assume.

Anyway, what I’m trying to say is: the Seol Da-bin who first learned the word “sex” was in middle school.

Now, I’m 21. Twenty-one. A second-year at the academy.

It’s been roughly five years since I first stumbled upon a risqué video, and—embarrassingly—I’ve piled up a ridiculous amount of useless knowledge since then.

Unlike my middle school self, the 21-year-old Seol Da-bin is far too corrupted to clutch her face and go “Eek! Eek!” at such things.

Meaning—

While the idea of sisters sharing the same man is startling…

“This… is way better… than I expected…♡”

…It ultimately boils down to just that.

A dilemma of whether to take a friend’s secret to the grave or intervene because this is socially messed up—the kind of thing you toss and turn over in bed at night.

Just that.

Rationally speaking, there was nothing more to see here.

With my unsettling curiosity resolved, the smartest move would be to slip away silently before getting caught like some nosy passerby.

And ideally, quietly closing the window I’d left cracked open earlier.

“Hey, wait… w-wait… too fast… ngh….”

“…”

“Don’t… rush… ahhn…♡”

…But unlike what I’d thought.

Maybe Seol Da-bin at 21…

Still wasn’t quite an adult.

“…Huh? Unnie, why—biting all of a sudden… ngh….”

“…Payback. For last time.”

“But you… already sucked my nipples… so much back then… and now… ngh….”

Just like my middle-school self who’d first watched those kinds of videos…

The 21-year-old Seol Da-bin stayed crouched in place.

“Ah, if we pressed the vibrator to Clit’s—”

“Huh?! Hey—! Lee Ha-yoon, you idiot…?!?”

“Pfft, look at you arching. …Isn’t this exactly what you do to me?”

“Still, the vibrator’s… too… …Wait, seriously, just—slow… down… ngh… you’re crushing my uterus….”

Embarrassment,

panic,

…and arousal.

A messy swirl of emotions.

…Uncannily similar to how I’d felt watching porn for the first time.

With my heart pounding like it’d burst, I—

Thud thud.

Pressed a hand over my chest to smother it.

For a very long time.

“……! ………. ………♡”

“…Wow. You’re… dripping so much….”

“…….”

…What else could I do?

Even if my knowledge had expanded massively,

the “adult” 21-year-old Seol Da-bin was still—

just like the middle-school Da-bin who should’ve stayed far away from such things.

Because proper experience…

“……Haaa.”

…was something I’d never had.

And the sounds of real sex…

were something I’d never heard before.

—

386

The crime scene… if you could call it that.

Either way, it took forever to finally peel myself off the infirmary’s outer wall.

The smack of skin slapping together,

their names sweetly tangled between moans,

even the obscene, wet sucking noises once the slapping stopped…

I’d clung there, holding my breath, eavesdropping—until I finally, carefully, shut the window and fled to a crowded area.

After what felt like an eternity of invading my friend’s privacy, I only exhaled the breath I’d been holding once I reached a food truck.

Now, I blended in among festival-goers like nothing happened… but Ha-yoon and Ji-yoon’s moans still rang in my ears.

“Haa…”

I checked my face with the back of my hand, worried it was beet-red, then exhaled so hard my soul nearly left my body as I replayed everything.

The short version? Seo Woo-jin was… having both Ha-yoon and Ji-yoon.

…Though phrasing it as “eating” them felt awkward.

“Dating”?

“In a relationship”?

Whatever. It wasn’t normal.

I didn’t know the nitty-gritty, but judging by what I’d seen, the three were definitely together.

Sisters sharing one man…

I couldn’t empathize even if the sky fell, but understanding it was somehow possible.

Maybe the sisters shared similar tastes.

Maybe they didn’t mind sharing a boyfriend.

Maybe Seo Woo-jin was just a pervert who gladly agreed to anything involving pretty girls……

Well, it wasn’t like stumbling upon a grotesque alien deep in the woods—this wasn’t a zero-percent possibility, right?

Maybe it’s more common than one might think.

But like I said earlier, empathy was still impossible.

One person dating multiple people simultaneously—

There’s a term for that, no?

Cheating. Affairs. Two-timing.

“…Wait. Now that I think about it, since they’re not hiding it…”

Is there a term for openly dating multiple women?

…Harem?

Isn’t that just for fiction?

In reality… Uh…

Polygyny?

No, that’s too much…

“…Ugh.”

No, no. Whatever.

The more I tried to seriously analyze what I’d witnessed, the messier it got.

I was just hoping to learn couple-like behavior from Woo-jin and Ha-yoon—after all, even a three-year-old can teach you something.

Instead, tailing their suspicious movements led me to a friend’s secret.

Guess I’ll have to take it to the grave, as planned.

If this got out, our class—if not the whole academy—would flip.

That said, I couldn’t help wanting to interfere a little.

Not entirely because this kind of thing wouldn’t be viewed well socially…

But for another reason:

I was worried someone else might stumble upon their relationship.

“First the vibrator, now this… Why are they so careless?”

Unlike me—who planned to stay silent—someone else might exploit this info.

Blackmail under the guise of secrecy… or worse.

Ah, though instead of awkwardly confronting Ha-yoon, I could just drop a hint to Woo-jin—who wouldn’t care about weirdness.

“If you’re gonna do this, at least try not to get caught.” He’d get it.

And there’s another uncomfortable thought…

“……”

…I eavesdropped on people having sex.

Imagined the visuals myself.

And now my panties are uncomfortably damp.

This is… Well…

…No.

Forget it.

I’ll just change when I get home.

This isn’t something to discuss with Woo-jin or Ha-yoon—it’s my issue.

Steeling my flustered heart, I first sent a text to the boyfriend I’d completely forgotten about:

“Heading back soon. Should I come to the spot from earlier?”

But whether he was too absorbed in the performances or what, the [1] next to my message stubbornly refused to vanish even after 30 seconds of waiting.

Right. Idiot me for expecting an instant reply from literally him.

Finally giving up, I turned off my screen and quickened my pace toward the distant outdoor stage.

With this chaotic mess in my head,

maybe walking home while talking to Baek Ji-ho would… somehow make things better.

…Ugh. Annoying.

“Sunbae. The management team’s short one person—they asked if anyone could help with patrols? It’s just a simple round, so they wanted someone sent over.”

“…Why’s there a vacancy?”

“The message said one of their members got drunk before starting patrols. At least they’re honest?”

“Better than a lazy excuse.”

“What should we do? We don’t have spare hands…”

“I’ll go. It’s just patrols, right?”

“…Well, yes, but shouldn’t someone else—”

“I wasn’t doing much anyway. Need some fresh air.”

I know it’s my job, but ugh.

Having lingered at the academy longer than usual for the festival’s first day, I stretched and stepped outside.

Night air usually feels refreshing, but today? Not so much.

Especially with the faint, greasy scent of meat hanging in the air… Whatever. It’s just a few days.

The muffled music grew even quieter—while I’d spaced out, the last performance must’ve ended.

Crowds dispersed like retreating tides. I briefly eyed the litter piled along the path before finishing my stretches.

Yawning, I headed toward the main building.

No particular reason.

Just checking for intruders attempting indecent acts during the festival.

Though this was mostly for show.

Last year’s patrol turned up no intruders—not even legitimate visitors.

Most buildings lock up by evening anyway (except the library). If people wanted to do things, they’d hit a motel.

Midway through greeting familiar students en route, I saw—

“……”

—Seo Woo-jin and two girls.

The sisters Yozora had mentioned earlier, walking out of the main building’s direction.

That’s all I saw.

No way to know what they’d done.

Could’ve just been a coincidence—no proof they’d actually been inside.

But…

“……”

Honestly?

It’s obvious.

After a quick detour into the main building (under the guise of a patrol check), I ignored everything else and stepped into the infirmary…

“…Yep.”

On Woo-jin’s desk—

I idly tapped the small diffuser I’d seen last time before leaving.

…Just to confirm.

No other reason for stopping by.