I walked into the kitchen late that night and there she was, my older sister Lena, bent over the counter in nothing but a thin tank top and panties. Her ass cheeks were round and firm, the fabric riding up so I could see the crease where her thighs met. At twenty-eight she still had that tight body from years of running, and I was twenty-five, hard as fuck the second I saw her.
"Couldn't sleep either?" she asked without turning around, her voice low and knowing.
I stepped up behind her, pressing my already stiff cock against the crack of her ass through my boxers. "Not with you walking around like this."
Lena pushed back against me, grinding slow. "Then do something about it, little brother."
I yanked her panties down in one rough tug. Her pussy was already wet, lips puffy and slick. I ran two fingers through her folds, spreading the juice up to her clit and rubbing hard circles. She moaned and spread her legs wider. I dropped my boxers, grabbed my thick cock, and slammed it straight into her cunt in one thrust.
"Fuck yes," she hissed. "Give it to me deep."
I gripped her hips and started pounding, the wet slap of skin on skin filling the quiet kitchen. Her pussy gripped me tight, hot and dripping down my balls. Every time I bottomed out she pushed back, taking every inch like she was starving for it. I reached around and pinched her nipples through the tank top, twisting until she gasped.
"Harder," she demanded. "Fuck your sister like you mean it."
I pulled out, spun her around, and lifted her onto the counter. Her legs wrapped around my waist as I drove back inside. Her tits bounced with every thrust, nipples hard. I leaned down and sucked one into my mouth, biting just enough to make her whimper. Her hand snaked down to rub her clit while I fucked her, fingers sliding over my shaft as it pistoned in and out.
We moved to the living room couch. She got on all fours, ass up, and I knelt behind her. I spread her cheeks and licked her asshole once, quick and dirty, before shoving my cock back into her pussy. She reached back and spread herself wider for me. I fucked her fast and rough, balls slapping her clit, her juices running down her thighs. When she came she shoved her face into a cushion and screamed, pussy spasming around my dick.
I wasn't done.
I flipped her onto her back, hooked her legs over my shoulders, and drilled her deep. Her cunt was swollen and red, stretched around me. I spit on her clit and rubbed it while I pounded, watching her eyes roll back. "You like your brother's cock ruining you?" I growled.
"Love it," she panted. "Fill me up. Cum in your sister's pussy."
I slammed in one last time and unloaded, thick ropes of cum pumping straight into her. She milked every drop, grinding against me until I was empty. We stayed locked together, breathing hard, my cock still twitching inside her.
Later we moved to her bed. She rode me reverse cowgirl, ass bouncing on my lap while she reached down to stroke my balls. I slapped her cheeks red and watched my cum leak out around my shaft with every bounce. She came again, thighs shaking, then spun around and sucked me clean, tongue swirling over the head before taking me to the back of her throat.
By morning we were tangled in sheets, her pussy still leaking my load, both of us sore and satisfied. We knew it was wrong, but that only made the next time hotter.
