*Jiggle.*
Helping Ji-min up, I flinched at the sight of her massive tits bouncing nicely under my shirt.
Did she take her bra off 'cause it was tight?
No time to freak out—she leaned into me, breathing heavily like a drunk.
"Mmm… I believe… my little brother… will do good…"
"Just lie down."
Ji-min stumbles, and I help her drunk ass onto the bed. Phew.
"Ohh~ Jang-seok's girlfriend~ Hi~"
"Argh!"
I turn around, and she's talking to the fucking pussy hole of the Fleshlight I left on the bed.
"I'm Jang-seok's big sis~~ Nice to meet you~"
"She's not my girlfriend!!"
"Doesn't she get lonely if you don't stick it in~? Gotta fuck that hole, right?"
"She's fine!"
"Pfft, haha!"
I figured getting caught with a Fleshlight was no big deal, but getting teased about it? Fucking embarrassing.
Ji-min flops next to the Fleshlight, still in doggy-style position, and passes out, forgetting her work stress and looking totally defenseless.
*She doesn't see her brother as a guy…*
I try to forget the soft feel of her skin from just now.
I was gonna do some random shit and sleep, but lying on the sofa, my mind's getting sharper, not sleepier.
And my dick's getting fucking harder.
No, no, stop it.
Even if this is a shitty game, it's too early to hit the quit button.
Gonna watch some YouTube to calm my ass down.
I open YouTube on my phone and lose my shit.
The algorithm's fucked, recommending nothing but gay dudes flashing their tits.
"What the fuck's wrong with this?"
No matter how much I scroll, it's all that crap, so I reset the algorithm.
Watching shorts and rubbing my cock, but every video pisses me off, so I sigh.
Can't focus on anything else.
The ultimate dopamine hit is lying on my bed right now.
A soft, fat ass that a loser like me could never deserve.
Next thing I know, I'm standing over my sleeping sister, dick rock-hard.
"Sis, wake up."
If she doesn't, I'm gonna fuck her?
Hikikomori like me don't have patience.
If I could plan my life and stick to it, I wouldn't be living for dopamine in the first place!
*Stroke, stroke!*
Like the animal I was born as, I start jerking my dick while staring at Ji-min.
I even reach out and grope her ass!
Dopamine BOOM!
Her ass is so fucking soft and huge, it's unreal.
It looked big through her skirt, but in person? Fucking insane.
All this time, that Fleshlight copying her ass was just a shitty silicone lump.
The Fleshlight's smaller for portability, so comparing them side by side just makes the real thing look even better.
"Sis, you asleep?"
If she's out cold, that's why she's like this, right?
I roll her onto her side, grab her ass, and knead it roughly.
Pulling her inner thigh a bit, her pussy lips stretch, and I see soft, pink flesh peeking out from her panties.
*No hair.*
Ji-min waxes her pussy.
Smooth as fuck. Prepping for her future husband?
But as far as I know, she didn't have a boyfriend…
*Sniff sniff.*
Can't tell if she's a virgin, but there's no smell.
Spreading it a bit, the hole looks so tight it'd barely fit a pinky.
She's definitely a virgin…!
I wanna fuck her. I wanna stick it in her pussy.
I want my dick to be the first Ji-min feels.
My brain's going off the rails. If I just borrow her hole while she's drunk, it's safe, right?
*No fucking way!!*
One wrong move, and one dopamine hit could cost me everything.
Her engagement could fall apart, and she might get pregnant with my kid.
Pregnant with my kid?
Ji-min?
My dick's throbbing, leaking pre-cum like crazy.
*That kind of dopamine… might be worth it!*
She's nice, so I could probably talk my way out.
Then, instead of mooching off Mom and Dad, I could mooch off her as her kept man!
*Thump thump.*
*I'd be down with Ji-min.*
She's hot as fuck. Big tits, big ass, tiny waist.
No Pilates or yoga, yet she's got this natural body—fucking unreal.
*Slurp slurp.*
"Mmm… Nngh…"
I bury my face in her fat ass and start licking her pussy.
Gotta get it wet to slide in, right?
I remembered some shit and went to town on her clit with my tongue. Her hips and big ass twitched in response.
"Ah… Ahh…"
Her ass moves like it's dancing.
She's definitely feeling it, reacting to the pleasure.
No, she's way more sensitive than I thought… Her pussy's getting wet fast as fuck.
*"I'm lonely,"* she said. She meant it.
Thinking her pussy's lonely, I grab her twitching ass as my tongue works harder.
My cock's rock-hard, licking like crazy, prepping for sex.
Any thought of being careful flew out the fucking window.
All I can think is I need to fuck her, fast.
Sis's pussy, Sis's pussy, Sis's pussy…
*Lick lick lick…*
"Nn… Nngh! Nn!"
Ready…
But when I looked at Ji-min's face and slid between her legs…
Memories of our years as family flashed by, fucking up my head.
"Jang-seok… ah…"
Her sleepy mumble was the final blow.
All those childhood memories.
Even if we're not blood siblings, this shit… it's not allowed.
It's some animal bullshit.
*And humans are animals.*
I wrapped her upper body tight in the blanket.
"Mmm. Mm."
Face covered, perfect.
With just her pussy and long legs exposed, memories can't fuck with me.
Flipping her around, I got her in doggy-style, ass up high.
Everything's ready.
Jerking my dick slowly, I press it against her ass…
*Ugh… still.*
Even now, guilt's hitting me…
Crossing this line is so fucking hard…!
*It's her fault for letting her guard down, saying it's the last day.*
I rationalize it.
Her twitching ass, still buzzing from my tongue, is right in front of me. I press my dick against it.
I could slide in if I tried.
*"Mmm… I believe… my little brother… will do good…"*
I'm such a fucking loser. I don't have the balls to do it.
So…
"Lend me your strength, Rei."
I decide to use the Fleshlight Rei.
Bought it for its big ass, but next to Ji-min's real fat ass, it's just a tiny toy.
I grab it and place it next to her on the bed.
Like usual, I lube up my dick and slide into the Fleshlight.
Staring at Ji-min's ass like a creep, I thrust…
*Schlick schlick…*
"…What're you doing?"
Drunk Ji-min breaks free from the blanket, peeks out, and looks at me.
"Fleshlight jerk-off."
"…Fleshlight jerk-off? Pfft. Cute way to say it."
She's cute, too, getting this drunk off three beers…
Thrusting in front of Ji-min, I suddenly pull out…
Bold as fuck, I move behind her fat ass, line up my tip with her pussy hole.
*Schlup.*
"Nngh?"
Noticing something's off, she shifts her ass, but I grab her waist tight and shove my dick in hard!
*Slosh slosh slosh!!*
"Oops! Mistake!"
"Ah… Huh? Wha?"
I "accidentally" slid into her pussy while jerking off with the Fleshlight!
Her shocked pussy clamps down tight on my dick. The feel of her firm walls gripping my raging boner is fucking unreal.
Dopamine…!! No… something dangerous is exploding in my brain…!
I stay buried, holding the position.
*Clamp clamp.*
Gotta let her pussy adjust so it doesn't hurt when I move… ♡
"Jang-seok…?"
Her half-asleep voice makes my dick swell like it's gonna burst.
"Sorry! Accident★"
*Schlick schlick schlick* ♡
Possessed by a cheerful loser, I pretend it's an accident and pound her pussy.
"What's an accident when you're fucking your sister?!"
Shocked by the sudden pounding, Ji-min tenses her ass and thighs.
Her inner muscles sync up, squeezing my dick so fucking tight it's insane.
"I was jerking off with the Fleshlight and slipped into your pussy. Can't help it!"
*Schlick schlick schlick* ♡♡
"Nn, nngh! Huh? Wha? Accident? An accident?"
Confused and drunk, she gasps as I hold her and ram her pussy hard!
"Gotta finish my jerk-off, so I'll use your pussy!!"
*Slosh slosh slosh.* Her hot, wet walls cling to my dick like they don't want it to leave.
Fuck… No comparison to the Fleshlight… Ji-min's pussy is fucking unreal…!!
*Schlup!!*
"Oh, ohh!?"
"Just borrowing your pussy hole instead of the Fleshlight for a bit!"
Blaming the Fleshlight was a genius move.
Like shamans in movies sacrificing a pig or chicken, it's the same deal.
Pretending I "accidentally" got my dick caught in her pussy, I toss the used Fleshlight under the bed and pound her pussy hard!
*Schlup schlup schlup schlup!!*
"Hnngggh…!!"
Treating her pussy like a Fleshlight, I buy time by making it absurd…!!
"Fuck, this is insane… My brain's melting… Dreamed of this… Ji-min's fat ass…!"
*Smack smack smack smack…!*
Ji-min's helpless, her pussy clamping tight on my dick with every thrust.
Drunk or half-asleep, she doesn't resist, and I slam my hips into her pussy, fucking like crazy.
The once-in-a-lifetime dopamine hit of raping my sister is coming…!!
"Ah, ngh, ah, ah!"
"If I'm gonna cum, I'll cum in your pussy! Get pregnant with my kid and ruin your life!"
The word "pregnant" makes Ji-min's pussy squeeze even tighter.
*Clamp clamp…* ♡
*Schlup schlup schlup* ♡
"Get pregnant! Get knocked up by this loser's sperm!"
"Ngh, ugh, hah…! Hah…! Calm down… Slow down… in my pussy… Nngh…!!"
She struggles, sweating, tits bouncing, putting up weak-ass resistance.
When she shakes her ass to pull out, I grab her waist and keep pounding.
I was born to cum in this fucking amazing pussy…!!
"Get pregnant! Get fucking pregnant!"
Goddamn, Ji-min's pussy is unreal… Keep squeezing my dick for betraying your kindness… ♡
*Smack smack smack smack…!*
I slam my hips into her fat ass, thrusting fast.
I'm cumming… I'm really cumming in her pussy…!
*Schlick schlick schlick schlick* ♥
Is her pussy allowed to feel this fucking good…?!
I can't stop thrusting!
"Ngh, ugh, hah, ngh, ugh."
Ji-min lets out short moans, overwhelmed, every time I press in.
*Clamp clamp* ♥
It's sex… I'm having sex… The awkward excuse and initial thrill melt into a sticky mess coating the bed.
I keep smacking her fat ass with a hot rhythm, taming her pussy with my horny dick.
*Schlup* ♥ *Schlup* ♥ *Schlup* ♥
"Hn, hnnngh…" ♥
Ji-min lets out a sob-like sound, swallowing hard.
She's cumming from my dick…!
"Sis…! I'm gonna irresponsibly blow my load in your pussy…!!"
"Hn, nngh…!"