20. Once an Animal Tastes Human, It Hunts Us Forever
They say even an animal that has devoured a human just once will see humans as prey for the rest of its life. An animal that has tasted human flesh is no longer treated as an animal but as a beast—stripped of legal protection and put down.
...It's just like my story.
After that day, I could no longer see Gyeo-ul as my little sister.
"... ."
"... ."
Two weeks had passed since then.
I finished eating first and stared at Gyeo-ul, still sitting at the table. I swallowed hard.
...Not because I'm hungry.
Things between us siblings had gotten seriously awkward. Whenever our hands brushed or our bodies bumped, we'd both jolt like we'd been shocked.
I knew Mom hadn't noticed anything, but it was already too late to take it back.
God knows how many times I'd jerked off since then. The first time was hard, but two or three times after? Way too easy.
Nearly two months in the military, plus another month after discharge—the pent-up lust exploded all at once, and I couldn't hold back.
My body and brain felt like they were breaking, so I'd been holding off these past few days.
Honestly, I couldn't stay home alone with her anymore. It felt like something was gonna happen.
Gyeo-ul pretending like nothing happened just stoked my filthy urges.
"Gyeo-ul-ah."
"W-what... Oppa."
And come on. If you're gonna play dumb, at least don't avoid my eyes. It's so obvious.
Don't blush, don't stutter.
"I'm heading out for a bit."
"...Where to?"
"Anywhere."
I bolted out of the house like I was fleeing.
...Where the hell do I even go?
Maybe the smell of paper would calm me down, so I stopped by a bookstore today.
...Stupid idea.
It smelled kinda like Gyeo-ul's room, so it didn't help at all.
I'm going insane.
Maybe reading would settle me. I grabbed the first book that caught my eye and started reading.
Halfway through, it hit me.
...This is basically straight-up smut, fuck.
Who cares if it's a bestseller? The descriptions are so lewd.
...Maybe that's why it's a bestseller.
I shoved it back on the shelf.
I'm losing it. No clue what to do.
I'm anxious. Feels like I'll snap.
I pressed my hand to my forehead to cool my head, leaned back, and scanned the area. That's when I spotted some very familiar faces.
...Why are they here?
I glared subtly, and they noticed, whispering to each other before walking over.
"Uh... hey, Ga-eul."
"...Hello."
One was a college classmate I'd bumped into at the cafe last time, the other was that tiny friend of Gyeo-ul's.
...What the hell do they have in common?
"What brings you here?"
"I live around here, so I was killing time and on a date with my sister."
"...You two are sisters?"
"Yeah, but... do you know my little sister by any chance?"
Gyeo-ul's friend, peeking out from behind the classmate, flinched when our eyes met.
...What the hell did Gyeo-ul say to make her act like that?
"Uh... I've seen her a few times since she's my little sister's friend."
"Oh, you mean Gyeo-ul?"
"How do you know my sister?"
"Heard about her from my sister a bunch. Said she has this super pretty friend. I've seen her face once too."
"...I see."
"Figured it might be her since the names are similar."
The world really is small. Makes sense since we live nearby and go to similar schools.
It's not weird for sisters to go to the same high school. Me and Gyeo-ul are basically at the same place—boys' vs. girls' school is the only difference.
"Ah, phone call. One sec."
"Yeah, sure."
"... ."
She suddenly clutched her phone and stepped away to take the call quietly, leaving her sister behind.
...Gyeo-ul's friend's name was Shin Nara, right? What was the classmate's name again?
"...Shin Nara, right? I heard from Gyeo-ul."
"Ah, yeah."
"...What's your sister's name?"
"...Huh?"
"Forgot."
"...Shin Haneul."
"Ah, got it. Thanks."
Her eyes had been wary like she was sizing up danger, but suddenly she looked at me with pity.
...Hey, I can forget. We're not close.
"Ah, sorry sorry. Friend called."
"Nah, no need to apologize."
"Got time? Wanna grab coffee with us?"
"...I have plans."
"Ah... right, you have a girlfriend."
"...What?"
As I wrapped up with the classmate, Gyeo-ul's friend suddenly looked shocked and questioned it.
"...Oppa has a girlfriend?"
"...Not quite yet."
"...For real?"
"Don't bullshit, I saw you on a date last time."
"Not every date means you're dating."
"Ah, that vibe?"
"... ."
"Anyway, got it. We're heading out."
She grinned like she understood something, patted my shoulder with an encouraging "fighting!", and left with her sister.
At the end, Gyeo-ul's friend gave me this super complicated look.
I couldn't read it—some weird imagination? Made me uneasy.
...Haa.
Talking to near-strangers wore me out, nerves on edge. At least it chased away the stray thoughts.
Feeling somewhat calmer, I headed home. Took a deep breath and opened the front door—no one there.
Checked my room just in case; thankfully empty.
...Still, should say I'm back.
Knocked on the next door over. Gyeo-ul answered her phone and opened up.
"I'm home."
"... ."
She glanced at me, nodded curtly, and shut the door again.
...Sigh.
Headed to the bathroom, stripped, and wiped down with water. Good that no weird thoughts yet.
Reached for clothes in the towel cabinet to change—only two t-shirts, no pants.
No choice, so I went back to my room in just a t-shirt and panties on top.
"... ."
"...What now."
Gyeo-ul was lying on my bed.
Same pose as that day, same clothes.
Same eye mask on.
Curtains drawn, so the room was dim even though it was still afternoon.
But the sunlight piercing through highlighted her lips, her breasts, her thighs in stark relief.
"...Gyeo-ul-ah."
"... ."
I thought I was calm. Wrong—just forgotten.
Out of sight for a bit.
Still, not drunk; last thread of reason held firm.
My gaze locked on her exposed thighs.
"If you have something to say, say it."
"... ."
"That time, fine. But why today?"
"... ."
"...Kim Gyeo-ul."
At least I wanted to talk, so I pulled off the eye mask.
Honestly, not sure if I can make promises or resolutions yet.
If it were that easy, I wouldn't be agonizing.
But who knows. Emotions too big, can't control—might mess up.
So we should talk, at least once.
"... ."
"Open your eyes."
"... ."
"Look at me."
"... ."
I sat by her head, staring straight down. Wanted to know why.
At least until Suneung ends, let's keep distance—we'd said that.
"...Gyeo-ul-ah."
"...Oppa."
How many times did I call? She finally answered.
Eyes still shut.
"...You went to the bookstore today?"
"Yeah."
"...Friend called. Said she saw Oppa."
"Ran into her briefly."
"...I heard."
"Heard what."
"...Something about a girlfriend-like person."
"... ."
Ah, shit. Good thing her eyes were closed.
Would've been caught smiling. She sounded a bit sulky, whiny—like jealous. Too cute. Too hot.
"Because of that?"
"Her sister... said she's seen you."
"...And?"
"...You've been going out a lot lately too..."
"That's separate. Why are you in my room like this?"
"...Dunno."
"Fine for today, but why that time?"
"That was... curiosity."
"About what."
"...Wondered what you'd do if I pretended to sleep..."
"...That wasn't pretending."
...Straight-up seduction.
Couldn't hold back in the end.
"Didn't think you'd go that far... Thought you'd just mess around..."
"Then why now? You know messing around doesn't end there."
"... ."
She clamped her mouth shut.
... .
I shut mine too, swallowed hard.
"...Anyway, for real...?"
"What."
"The girlfriend thing...?"
"It's real."
"Huh...?"
"Right in front of me."
"...?"
She didn't get it, so I lay beside her and lightly pulled her back into an embrace.
...Haa.
Screw it now. Social taboos, ethics, morals—fuck, I'm no saint.
Don't care anymore. So what?
Everyone screws up sometime.
"I meant you."
"Huh...?"
"The one I was on a date with last time."
"Ah... ."
"No one else to date but you, loser that I am."
"... ."
"Gonna be that way forever."
"...For real?"
"Think I'd lie?"
"...Oppa."
"Yeah."
"...Put the eye mask back on."
...For real.
Why does this happen? Why is she my sister? Why does she know exactly how to drive me crazy?
Amazing. Makes me want her more.
I looped my arm, put the eye mask back on.
Then slid my hand down, exploring her body slowly.
Started with her cheek. Then lips, down to neck, collarbone, to her breast.
Even over her clothes, way softer, tastier than I'd fantasized.
"...Hng... ut... ."
But that wasn't enough.
Slid lower, slipped under her shirt.
Brushed her stomach. Slim but some nice give on the lower belly.
Pressed firm—she let out a little pained moan.
...Hoo.
Pressed my whole body closer, skin crawling up.
Felt the bra. God, wanted to rip it off.
...But I don't know how.
Back had no hook. Sports bra? Kinda loose fabric though.
Thought about reaching inside, but held off. Save for later.
Started with the side breast, kneading gently.
"Ha... ut... ."
Of course I bit her neck. Not enough to mark.
As long as I didn't suck too hard.
Buried my nose, breathed deep.
Then blew softly in her ear.
Even holding her tight, she trembled.
Plastered together, hands kneading her breasts—it was maddening.
Just drawers on my lower half.
So hard it was poking out the edge.
Pressed my pubic bone to her ass, tensed my thighs. Released. Pulled again.
Waist moved on its own.
Realized pleasure isn't just physical—bone-deep.
Shallow moans and heavy breaths filled the room.
Our clothes soaked through. Not even summer.
So I hiked her shirt up a bit. Just enough to see her waist.
One hand off her breast to her side. She shivered again.
Hugged tighter to stop it, stroked her waist gently.
Now her voice quivered.
Flipped her prone, mounted her.
Hand under the bra—soft flesh directly.
Groped around like searching; kept hitting bumps.
Sweat each time. Licked and spread it even.
Pinned her harder so she couldn't escape.
...For real.
Gonna cross the line.
But hey... nothing to worry about. Right?
Even without thinking consequences, some things you can handle, some you can't.
Instead, bit her nape, toyed with her breasts, ground my near-exploding lower half against hers with all my weight—like crazy.
Bed creaking.
Beyond my control, waist shaking till...
...Haaaa. Hoo. Heuk.
Panted ragged. Did it. Kept grinding after.
Savored multiple waves, then went limp.
...Erect to the limit, tip poked out—shot all inside my t-shirt.
...Better than on her back, I guess.
Still glued tight, my belly wet.
Gotta toss these clothes.
"...Oppa."
"Gyeo-ul-ah."
"...Can't breathe."
"Ah... yeah. Lift your waist."
"...Okay."
She arched a bit; pulled my hand out from still kneading her breast.
Got off her.
...Insane, touched her so long and already miss it.
"...The, eye mask."
"Ah, yeah."
She sat up, pointed at it looking at me—so I took it off.
...Can't she do it herself?
Did it anyway.
"...Oppa. ...No."
"What."
"...Can't. Till Suneung."
"...?"
"Any more... and I won't focus at all..."
"...Yeah."
"...Can you hold out just one month?"
"No."
"Huh?"
"Don't think I can."
"...Then no."
"Already crossed that line."
"...For real, ...no."
"Real?"
I pulled her close as she averted her eyes. Kissed her collarbone over and over.
...Ah, brain's fried.
No normal thoughts possible.
Not one month till Suneung. A month and a half—no way.
"...Sometimes... I'll come like this. No more than that."
"...Got it."
Released her flushed face, stroked her.
Luckily just on our clothes—bed fine.
She fled to wash up; I went to the master bath, cleaned myself.
Of course, tossed the panties and t-shirt.
...Haa, fuuuuck.
I'm in heat for real.
What now.
Ended up jerking off again in the shower.