I never planned to fuck my sister. It just happened one humid summer night when the power went out and we were both too wired to sleep. I was twenty-two, she was twenty, home from college for the break, and the house was empty except for us. We’d always been close, but that night the air felt thick with something else.
We ended up on the couch in the dark, sharing a bottle of whiskey straight from the neck. She was in a thin tank top and shorts, no bra, nipples hard from the heat. I couldn’t stop staring. She noticed and didn’t look away. “You keep looking at my tits like you want to taste them,” she said, voice low and rough. I didn’t deny it. Instead I leaned in and kissed her hard, tongue pushing past her lips. She moaned into my mouth and climbed onto my lap, grinding her pussy against my already stiff cock through our clothes.
“Fuck, this is wrong,” she whispered, but her hips kept moving. I slid my hands under her tank top and squeezed her tits, thumbs rubbing those stiff nipples until she gasped. She reached down, yanked my shorts open, and wrapped her fingers around my dick. “Big brother’s cock is so fucking hard for me.” The words made me throb. I shoved her shorts aside, found her soaked panties, and pushed two fingers straight into her tight cunt. She was dripping, clenching around me as I finger-fucked her fast and dirty.
She stood up just long enough to strip, then straddled me again and sank down on my cock in one smooth motion. Her pussy swallowed every inch, hot and wet and perfect. We didn’t bother with slow. She rode me hard, tits bouncing in my face while I sucked on them, biting the nipples the way she begged for. “Deeper, fuck me deeper,” she panted. I grabbed her ass and slammed up into her, skin slapping loud in the dark room. She came first, cunt squeezing my shaft, juices running down my balls. I flipped her onto her back on the couch and pounded her until I flooded her with thick ropes of cum.
We didn’t stop there. After a minute to catch our breath she got on her knees and sucked me clean, tongue licking our mixed mess off my cock. Then she turned around, spread her cheeks, and told me to take her ass. I spit on her hole, worked my fingers in, then pushed my dick inside that tight ring. She pushed back, taking it all, moaning like a whore while I railed her ass raw. I came again deep in her guts, and she reached between her legs to rub her clit until she squirted on the floor.
By morning we’d fucked in the shower, on the kitchen counter, and once more in her bed with her legs over my shoulders.

We both knew it was incest, knew we shouldn’t, but neither of us cared. Every time she called me “brother” while my cock was buried in her it only made us hotter. We spent the rest of the summer sneaking around, fucking whenever we could, raw and filthy and exactly what we both needed.