Lig had always been the one I couldn't stop thinking about, even when it was wrong as hell. My sister, my flesh and blood, with that tight little body she kept hidden under baggy clothes. We were both grown, me twenty-three and her twenty-one, living in the same cramped apartment after mom moved out. One humid night the AC broke and we ended up on the couch together, beers in hand, the TV flickering low.
"Fuck, it's hot," she muttered, pulling her tank top away from her sweat-slicked skin. Her nipples poked hard through the thin fabric. I couldn't look away. She caught me staring and smirked. "What, you like what you see, big brother?"
I laughed it off at first, but my cock was already thickening in my shorts. "Don't start that shit, Lig. You know it's fucked up."
She leaned closer, her breath warm on my neck. "It's only fucked up if we get caught. And I know you've jerked off thinking about me. I heard you last week, groaning my name through the wall."
That was it. The dam broke. I grabbed her, pulling her onto my lap so her ass ground against my hard dick. She moaned and rocked her hips, rubbing that hot pussy right over my length through our clothes. "Yeah, that's it," she whispered. "Touch me like you mean it."
My hands slid under her tank top, squeezing her full tits, thumbs flicking those stiff nipples until she gasped. She yanked my shorts down and wrapped her fingers around my thick cock, stroking it slow and filthy. "God, you're so big. Bet you've wanted to shove this in your little sister's cunt for years."
I flipped her onto her back on the couch, ripping her shorts and panties off in one motion. Her shaved pussy was already dripping, lips swollen and pink. I buried my face between her thighs and licked her hard, tongue fucking her hole while I sucked on her clit. Lig bucked and cursed, fingers tangled in my hair. "Eat that pussy, brother. Make me come on your tongue."
She came quick and loud, thighs clamping my head as her juices flooded my mouth. I didn't give her time to recover. I climbed up, lined my cock up, and slammed into her tight cunt in one thrust. She screamed, back arching, taking every inch. "Fuck yes! Pound your sister's pussy!"
I fucked her rough and deep, the couch creaking under us.
Her walls gripped me like a fist, hot and wet, milking my shaft with every stroke. I grabbed her hips and drove harder, balls slapping her ass. "You like that, you dirty little slut? Taking your brother's cock raw?"
"Harder," she begged, legs wrapping around me. "Fill me up. I want to feel you come inside me."
We switched positions fast. She got on all fours, ass up, and I drove back into her from behind, watching my dick disappear into her slick hole again and again. Her tits swung and she reached back to spread her cheeks wider. "Look at that, brother. Your cock stretching my cunt. Fuck me like you own it."
Sweat poured off us. I slapped her ass red, then reached around to rub her clit until she came again, screaming into the cushion. Her pussy spasmed and squirted around me. I couldn't hold back. I buried myself to the hilt and unloaded, pumping thick ropes of cum deep inside her, flooding her womb.
We collapsed, breathing hard, my cock still twitching inside her. She turned her head and kissed me, slow and messy. "We're doing this again tomorrow," she said. "And the next night. And every night after that."
I smiled against her lips, already getting hard again at the thought. "Damn right we are, Lig. This is just the start."
