76. Obsession
Droplets of obsession trailed down, dripping steadily as I dragged my sister out of the shower. I couldn't hold back any longer. Even the time it took to take each step felt unbearably long. I threw her soaked body onto the bed—her feet still planted on the floor, but her upper body sprawled flat.
"...Oppa, you gonna do it like this?"
"...Yeah."
"Wait... just a sec, get my bag... the one that's mine."
I didn't even have time to snap back at her why. Saving even the seconds it took to think, I grabbed the bag strewn across the bedroom floor and handed it over. She rummaged inside with her wet hands, then pulled something out and slipped it onto her head. A headband with cat ears, the kind they sell at amusement parks.
"...Kim Gyeo-ul."
"You bought it for me a long time ago..."
"..."
"It's Friday, so I figured you'd wanna go... thought you'd like it if I wore something like this..."
"..."
"I prepared it for you, oppa... so in return... kiss me... while you do it..."
I grabbed her stomach and shoulders where she lay prone on the bed and pulled her up. She reached back, fumbling until her left hand gripped my cock. I spread her folds with my thumb and thrust into her slick pussy, rough and unrestrained, pouring out every bit of my obsession.
"Ha... ugh... uh... O...ppa..."
The first round was from behind while standing, rewarding her for preparing this cute surprise and lifting her heels so sweetly—kisses laced with affection, plus teasing her nipples and clit.
"O...ppa... blindfold... my eyes are... dizzy..."
I kept going without a word, thrusting hard enough to squeeze my cock, massaging her abdomen firmly in pulses.
"F-Faster...! Too... fast... oppa... haa..."
Next, I gripped her hips, pounding away with wet slaps of skin on skin, relentlessly until she couldn't hold herself up anymore and collapsed onto the bed, clutching the sheets.
"K-Keep... ah, haang... slowly... uh? Hnng...!"
Her waist curving from her hips. Breasts spilling out to the sides even from above. Hair drenched like after a downpour, now utterly buried face-down in the bed, arms giving out—that was her limit. I showed no mercy.
"Haat, ah... k-kiss... kiss me... huh? Kiss... ugh... mmph..."
I leaned down with her, nipping her earlobe once, then gave her the kiss she begged for—still merciless, pounding away.
"...Ugh... mmph... hnng..."
Before I knew it, her heels weren't just lifted—they were off the ground entirely. I pushed her further up the bed, sheets sliding under us like we were wiping away the wetness, until we were both prone. Her ass still welcoming me, I slammed in with loud thwacks, pinning her down completely.
"Uh... ugh... haaak... heeek... O...ppa..."
"..."
"Oppaaat... make me... cum with that... quick... eek? He... eek..."
My little sister, crushed to the bed by her own brother. No strength left even to beg for kisses, head buried in the sheets, cat ears nearly slipping off—I mounted her, flattening her from above.
"Uh... mmph... heung... mmph..."
Her moans muffled into the bed. I took her however I wanted, nose buried in her wet hair inhaling her scent, hand slipping under to squeeze her tits hard enough to leave marks, pouring every ounce of love I had deep inside my sister. An expression of affection we'd repeat a million times more, who knows how many this made it.
"Ha... ah... ...huu..."
"..."
We lay stacked silently for a while. I rocked my hips gently to wring out the last drops of cum, sweat now outpacing the shower water on our skin—but I didn't care. I licked her neck tenderly, soothing her rough breaths without a word.
"...Gyeo-ul-ah."
"...Yeah."
"...Don't like doing it from behind?"
She turned her head side to side without showing her face. So lovable. Even after slaking my lust, the emotions only swelled bigger.
"I... like face-to-face more... but this isn't... bad."
"...Let's do it that way in a bit."
"...You like it from behind?"
"...Easier to touch your body that way. And I get a good view of you falling apart."
"I've never... fallen apart."
"You just can't see it. It's insanely hot. Your body crumbling bit by bit."
Insanely hot. Teasing me at first like a temptress, then clinging desperately for hugs and kisses once I'm in. As the sex gets rougher, she breaks down, losing control of her own body until finally, she surrenders everything to me, yearning to be dyed in my colors. Every single part was pure eroticism.
"That's... because of that."
"Because of what."
"You... fuck me so hard, oppa."
"...So it hurts?"
"No. ...Not sure. Your body and dick seem... big, and you're strong. Haven't tried anyone else, but it... fits perfectly. With you, oppa."
Even after we finished, she kept showering me with affection nonstop—fueling my obsession endlessly.
"...Wanna see? How slutty you get."
"...Me?"
"There's a full-length mirror right in front of the bed. I'll show you."
No idea why there's a full-length mirror right there by the bed. Actually, yeah—this room's meant for this. Perfect use for it. I hugged her tight and rolled us over so she straddled me, then gripped the bed and sat up slowly. She nestled into my lap like a spoiled girl in her big brother's arms. Both siblings buck naked, faces flushed with lust, genitals locked together with cum leaking out—no way anyone would mistake us for just siblings. But blood ties us, and we look alike, so yeah, we are.
"Ah, headband fell off. Here, let me put it back."
"..."
"See? Super slutty, right?"
"..."
I slipped the cat ears back on. Nothing really changed, but the mirror reflected something way hotter. Disheveled hair clinging to her cheeks. Breasts still soft and perky despite how hard I'd gripped them. Pussy normally so tight, now lewdly stretched around my cock. Wanting to make it even sluttier, I reached between her thighs and spread her legs wide—she hid her face like she couldn't bear to look, trembling in embarrassment. So cute. So hot.
"Why so shy? Not your first time."
"Ah... I just... didn't know... I looked like this..."
"...Why. Even to your own eyes, you look slutty?"
"..."
She nodded, hands pressed to her face. Hot as hell.
"...Wanna go again like this?"
"..."
She shook her head the same way, hands still over her face. Too damn hot. It'd been a while since I came, but my dick stiffened right back up, heart pounding.
"Gyeo-ul-ah. This time, do whatever you want."
"First... half... ...turn the mirror away."
"That shy about your own body?"
"Yeah, super shy! ...Embarrassing as hell."
"Why? You're gorgeous."
"...My face looks weird. Lie down, oppa. I'm gonna do it my way."
Unable to wait anymore, she rose from my lap, cum dripping as she turned around to face me. She pushed my shoulders to lay me flat, knelt over me, grabbed her big brother's cock, and rubbed it against her pussy. This time at her pace—slowly sliding my cum-coated dick back into her cum-soaked hole. She didn't move, just held me inside, drawing out the sex like that.
"...Hey, what does it feel like for you... during sex?"
"Huh?"
"What do you think about... when you're fucking me?"
"Not really thinking... anything specific. Just instinct. It's my way of showing love."
"Not that. Between lust... and affection... which is stronger?"
"...Do we have to split it like that?"
I get hard because I love you. I love you because you're hot. You're hot because I love you. No need to divide it.
"Your personality, body, face, how you love me... even being my blood sister. I love all of it together. No splitting needed."
"..."
"What about you? ...What does it feel like fucking your big brother."
Straddling her big brother, holding his cum deep inside, slowly rocking her hips back and forth. What must it feel like? For me, her real brother, lust and love overflow, filling me with happiness.
"Me too... kinda similar. But not really thoughts. I just... don't know. Is sex always this good? Or... is it because it's you?"
"...Compared to masturbating?"
"I... don't masturbate much. Touched my clit a few times... but it felt awful."
"Why? You love it when I touch your clit."
"Alone... it feels wrong. Like... pathetic? Or empty. So I just... hate it."
"...With me?"
"...My brain goes dumb, like I'm breaking. Sometimes scary 'cause I can't control it... but it feels good. You hold me and it calms me, and you keep holding after..."
She gazed down, murmuring her feelings softly. Moving at her own slow rhythm—so teasingly gentle it barely counted as sex—but my recently spent cock hardened fully again, stirred by love more than stimulation.
"...Don't you like me too much?"
"Way more... than you think, oppa."
"..."
"Didn't plan to get this far... but somehow. ...I wanna keep going like this forever."
"..."
"So don't worry. ...I'm yours forever. Only with you, ...only show this face to you. Love only you."
"...No need to get jealous?"
"Jealousy... maybe a little. ...You're kinda cute when you're jealous."
Cat ears on her head, grinning like it was the funniest thing—my heart fluttered like first love. Ah, it is first love. Each other's first. My one and only little sister. Her one and only big brother. Jealousy? Sure. Worry? No need. Unbreakable bond.
"...Side by side?"
"Ah, you don't like this...?"
"No, ...wanna face you and kiss."
"...Yeah. But one request."
"What."
"When you cum... cover me from above."
"...What?"
"Like when you're mad... I kinda wanna be crushed under you."
"..."
I realized the brain could melt from overstimulation—or from happiness overload. Pure drug. Dopamine overdose. Without thinking, my hands seized her hips and shook them; my waist bucked up wildly on its own. She collapsed onto me, unable to endure. We kissed obsessively, clinging like we couldn't get enough, shifting positions by instinct alone. No more words needed—we fucked endlessly, siblings lost in each other, until time to leave the room approached. When spilling all my obsession, I mounted her, kissing deep. Stuck together, overflowing, sharing love with my sister.