I slammed the door shut behind me, my cock already throbbing in my jeans after catching my sister Priya bent over the washing machine in nothing but a thin nightie. She was twenty-two, I was twenty-five, both adults who knew exactly what the fuck we were doing. No excuses, just raw need.
"Arjun, what the hell?" she snapped, but her eyes dropped straight to the bulge in my pants. She didn't move away when I stepped close, grabbed her hips, and yanked that nightie up over her round ass. Her pussy lips were already shiny, slick with juice. I shoved two fingers straight in without warning. She was tight, hot, and dripping wet.
"Fuck, bhai, you're so rough," she moaned, pushing back on my hand. I finger-fucked her hard, curling my fingers to hit that spot inside while my thumb rubbed her swollen clit. Her juices ran down my wrist. "You want this cock or not?" I growled. She nodded, panting, and reached back to unzip me. My thick dick sprang out, veiny and leaking precum. She wrapped her fingers around it and stroked once, twice, smearing the head against her ass cheek.
I didn't waste time. I lined up and drove into her pussy in one thrust. She cried out, clenching around me like a vice. Her cunt was soaked, squelching loudly with every slam of my hips. I pounded her against the machine, balls slapping her clit, the whole thing rocking with the force. "Take it, you dirty little sister slut," I grunted. "This pussy was made for your brother's dick." Priya moaned louder, shoving back to meet every thrust. "Yes, fuck me harder, fill your behen's cunt."
I reached around and pinched her nipples through the nightie, twisting them until she whimpered. Her walls fluttered, getting ready to come. I pulled out just long enough to flip her around, lift one leg over my arm, and slam back in. Now I could watch her face twist with pleasure while I drilled deep. Her tits bounced with every brutal thrust. Sweat made her skin glisten. I spat on her clit and rubbed it fast with my thumb.
She came hard, pussy spasming and gushing around my cock, creamy white juice coating my shaft. I didn't stop. I kept fucking her through it, chasing my own release. "Gonna fill you up," I warned. "Breed this incest cunt." Priya begged for it, nails digging into my shoulders. "Do it, bhai, pump your cum deep inside me."
I exploded, thick ropes of hot cum shooting straight into her womb. My balls tightened as I emptied every drop, grinding deep to push it all in. When I pulled out, a thick strand of mixed cum and her juices dripped from her stretched hole onto the floor. She scooped some up with two fingers and licked them clean, eyes locked on mine.
We didn't talk about stopping. That night I took her again in her bed, this time slower at first, letting her ride me while I sucked her nipples. She ground her clit against my pubic bone, smearing her wetness all over me, then leaned down so I could tongue her mouth while my cock stretched her open. Later I flipped her onto all fours and fucked her ass with my fingers while I pounded her pussy again. She came twice more, screaming into the pillow.
By morning my cum was leaking down her thighs and she was already sucking me hard again for round three. We kept it raw, dirty, no romance bullshit.

Just brother and sister using each other's bodies every chance we got, knowing exactly how wrong and how fucking good it felt.