Molesting Sis Right Behind Little Bro's Back
“I'm home.”
“Oh, yeah. Aigoo, has our Jin-woo been studying hard?”
I come home, but Dad greets Jin-woo first instead of me. Anyone watching would think Jin-woo was the real kid, not me.
“I'm back...”
“You're back? Did you study?”
The cold vibe aimed at me, the actual blood relative. I feel a twinge of self-loathing—like, how much of a failure do I have to be for this?—but then resentment bubbles up. That damn studying—what's the big deal? Treating me like shit just 'cause I'm not acing it?
“Go wash up and get back to studying.”
“...Yeah, okay.”
But I've been raised never even dreaming of rebellion. Putting on a sulky face in front of Dad now? No way that's easy.
So I escape to my room—my one safe space—before I can finally breathe.
Ughhh, stress.
Studying, studying, studying... I get it in my head that grinding hard for a pro career is the way to go, but when they keep demanding the impossible, anyone would burn out. I'm made of flesh and bone, not steel.
“Haa... fuck it, what do they expect...”
This isn't some one-off—it's chronic stress dragging on for years. Dad ignored me getting subtly bullied at school, but the second my grades tanked, he freaked out, scrambling for tutors and private lessons.
I pout and boot up the computer. Of course, I leave an online lecture site open as camouflage, pretending to study... and upload the video I shot of sis today.
“...Who knew that dumb YouTube bullshit I learned back then would come in handy now.”
Senior year of high school, studying felt like a dead end for survival. With graduation looming, I finally started thinking about life after... but I had zero clue what I could even do.
So I figured, hey, maybe YouTube? I dove in, studying it seriously. If my channel flopped, at least I'd pick up video editing skills and freelance for other creators.
Problem is, that's the exact half-assed thought every lazy fuck has when they realize “somehow it'll work out.” The market was a bloodbath red ocean.
My generic gaming streams bombed hard—already oversaturated, and I wasn't even that good. Final sub count: 50.
And even if I'd blown up, Dad—the hospital director—would never let me go pro. He's locked into the script: grind → top uni → cushy job. Anything else? No dice for his kids.
I get it. He made it that way himself, and my older bro nailed it with S University. So I'm the family fuck-up... Nah, screw that.
The shitty mood from Dad? It fades as I sneak peeks at my first “trophy,” shoving the memories aside. The video of me forcing myself on my cousin sis. I hit play on the raw, unedited upload—gutted like a fish on the block—and dive right back into arousal.
No more silently bottling stress and jerking it solo. Now I've got a toy I can squeeze pleasure from whenever I want.
=====
“...Fuck yeah. This is sex.”
Spotting sis at the OP after I went there. Blackmailing her into sucking my dick for real. Calling her to my room at home, paying her to blow me. Hiding her under the covers when Dad almost caught us, throat-fucking her irrumatio-style.
Exposing her as an OP whore and spending the last week in a frenzy of excitement... Then finding her Sextwitter (thanks to my pro-level lurking for jerk material), blackmailing her into real sex...
That first time, popping my cherry—I thought that was peak thrill.
But no.
At the academy. In that dim storage room. Blackmailing sis into signing that meticulously crafted sex slave contract, then fucking her as the finale—that whole sequence blew my first time out of the water.
Why hotter than deflowering? Not a one-night thing—sis is in my grip now, ripe for pleasure anytime. Her “submission” feeding my conquest kink, priming me to break her completely?
But looking back, the daytime warehouse fuck is a blur. Overhyped excitement made it dreamlike, unreal.
Didn't feel real, y'know?
Now, scanning my own footage for edits, it hits different—more vivid, tangible than that hazy dream-fuck. Now it feels real.
Wanna do it again. This position next. Blast cum on her face. My dick's rock-hard, throbbing painfully... but I hold back.
I want her real skin, to creampie her pussy proper. No wasting drops like old times. Every last spurt—deep in her cunt, her guts, whatever. Shove in, shake, unload till my eyes bulge red.
“Hurry up... come quick.”
Just two days since my first fuck. A 19-year-old guy's horniness doesn't vanish with a cold shower.
“Huu... huu... hold it...”
One touch and I'd blow—dick so erect. Gotta grip the head gently, deep breaths.
Then a nasty thought hits.
Back then... she cockily shot me down, huh?
First time I caught her as a whore, I strutted like a king. Like in hentai or porn—blackmail her, and she'd melt, slutting out on my dick instantly.
But sis told me to fuck off, treating me like before: ignored, annoyed, arrogant.
'Wait, this ain't working?'
My towering confidence wilted like my dick, forcing me to grovel with fat stacks of cash... Just for one oral session (huge leap from jerk-off days, sure), but still over 200,000 won.
Anyway, that was mere days ago. I'd timed it for her return, waiting in her and Jin-woo's room. Told her to strip, wanted to watch her change behind Jin-woo...
That arrogant bitch straight-up rejected me back then...
Could she kick me out now?
Glance at the clock: 1:20 a.m. Close. Time for sis to drag home from OP.
I bolt up, head straight to Jin-woo's room.
=====
“Hey, bored as fuck.”
“Play alone. Gotta study.”
Knew it. Study-bot.
I barge into his room on a “bored” excuse, and he reacts like clockwork—zero head-turn, laser-focused.
Whatever, not here to actually hang. Well, I am “hanging,” but not with him.
I flop on the lower bunk of their double-decker—Jin-woo's bed—whip out my phone for games, toss him occasional lines.
“Yo, not bored?”
“Why you bugging me today?”
“Dunno. Studying ain't clicking.”
“Don't click? Just do it.”
Crazy bastard.
Sis should be here soon. Ah, beep-beep-bzzzt—door lock.
She's here...!
-Come on in. Rough day?-
Dad's voice, overly chummy with his niece, like always.
...Save some for your real kid, huh?
-Haha... nah, it's fine.-
-Good. Wash up and crash.-
Dad fake-praising, sis fake-nice. Then...
-Creeeak—door opens, sis steps in. Same pretty face. But today, extra drained, shadowed.
“Out...”
Spots me sprawled on Jin-woo's bed like before—face jolts in shock.
“...Huh?”
“Sis is back?”
“....”
That dumbfounded look, unsure how to react to me casually lounging on her lil' bro's bed. Ahh... perfect.
“You're back...?”
“Uh, yeah.... Ch-Cheol-gyu too?”
“Take him out for a bit, sis.”
“Sh-sure?”
“Why? I wanna chill here longer.”
“....”
=====
Jin-woo glances once when sis enters, then back to books. Psycho.
How does he zone like that?
Me? Grinning ear-to-ear, eye-fucking sis. 'Sit here.'
Knowing he won't look, I pat the bed, mouth the words: sit beside me.
“....”
Exhausted from her grind—selling body ain't easy—she eyes me warily, but caves to my silent nudge, perching right next to me on Jin-woo's bed.
Hesitant, shrinking—nothing like her bold stare-downs before.
I chat loud, for Jin-woo to hear: brazen as fuck.
“Sis looks beat. Tired, huh?”
“Huh? Oh, no...”
“C'mon, obvious. Want a massage?”
“Eh?”
Sheesh, slow on the uptake.
Creeak. I sit up, scoot behind her perched ass—no permission asked—and knead her shoulders. She glances at me, mutters to play along.
“...Th-thanks for the massage...”
Quick peek—Jin-woo's eyes flick our way for a split-second, then snap back to his book like a magnet.
“....”
“Aigoo, shoulders knotted tight. Face looks extra down today.”
“...Yeah...”
In the room where her lil' bro studies, I “massage” normally at first... then slide hands lower.
Thin blouse. Tight H-line skirt hugging her lower half. Straight academy fit.
So... she went to OP panty-less, like I ordered, right?
One hand fakes shoulder rubs. Even if Jin-woo turns, my right—farther out—slides down, groping her tit over the shirt. That vulgar, massive G-cup udder.
Heavy heft through fabric. Jiggly give.
“...Haa... haa...”
Just fondling tits gets me hard... but sexually harassing her right behind her studying lil' bro? That twisted mental rush—my already-edging dick goes full throttle.