I slammed the door behind me and there she was, my little sister Lisa, bent over the kitchen counter in nothing but a tiny tank top and panties, her ass cheeks spilling out like she wanted me to notice. She was 22 now, all grown up with curves that made my cock twitch every time I saw her. I was 25, back from college for the summer, and the house felt too small for the both of us.
“Fuck, Lisa, you can’t walk around like that,” I growled, dropping my bag.
She straightened up slow, turning to face me with that smirk she knew drove me crazy. “Why not, big brother? You’ve been staring at my tits since you got home last week. Might as well give you a better view.” She tugged the tank top down, nipples hard and dark against the thin fabric.
I crossed the room in two strides and grabbed her hips, spinning her back against the counter. My hands slid under her top, squeezing those full tits, thumbs flicking her nipples until she moaned. “You’ve been teasing me on purpose, haven’t you? Leaving the bathroom door open, bending over every chance you get.”
“Yeah,” she breathed, pushing her ass back against my hard cock. “I want it. I want my brother’s dick inside me.”
That was all it took. I yanked her panties down and kicked her legs apart. She was already soaked, pussy lips glistening. I unzipped, freed my thick cock, and shoved it in deep with one thrust. Lisa cried out, gripping the counter as I started pounding her right there in the kitchen.
“Goddamn, you’re tight,” I grunted, slamming into her again and again. Her ass rippled with every thrust. I reached around and rubbed her clit hard, making her legs shake. “This is what you wanted, isn’t it? Your brother fucking you raw?”
“Yes, fuck yes,” she panted. “Harder. Fill me up.”
I pulled out, spun her around, and lifted her onto the counter. Her legs wrapped around my waist as I drove back in, watching her tits bounce while I fucked her. Sweat slicked our skin. She clawed at my back, biting my shoulder to muffle her moans. I came first, pumping thick ropes of cum deep inside her, and she followed right after, pussy clenching around me like a fist.
We didn’t stop there. That night turned into days. Every time our parents left the house, we were on each other. In the shower, her on her knees sucking my cock until I flooded her throat. On the living room couch, me eating her pussy until she squirted on my face, then flipping her over and taking her ass while she begged for more.
One afternoon I caught her in my bed, fingering herself with my boxers pressed to her nose. I stripped and climbed in, spreading her legs wide and sliding my cock along her wet slit before burying it to the hilt. “You’re such a dirty little sister,” I told her, thrusting slow and deep. “Getting off on your brother’s smell.”
She wrapped her arms around my neck and whispered filthy things back. “I want you to breed me, big brother. Cum in my pussy every day until it takes.”
We fucked for hours that day, changing positions until my balls ached. Doggy style on the bed, her riding me reverse cowgirl so I could watch her ass swallow my cock, then missionary with her ankles by her ears so I could go balls-deep. Every time I came inside her she came too, trembling and gasping my name.
By the end of the summer we had a routine. Late at night she’d sneak into my room, climb on top, and ride me slow and dirty until we both passed out sticky and satisfied. No guilt, just raw need. We knew it was wrong, but that only made it hotter.
The last night before I left again, we didn’t sleep at all. I took her in every room one final time, ending with her on all fours in the garage, my cum dripping down her thighs while she begged me to come back soon and fuck her again. We both knew this wasn’t ending. It was just getting started.
