I slammed the laptop shut after reading that Quora thread for the third time. Some anonymous guy had posted his raw Hindi sex story about fucking his own sister, and every filthy detail had my cock throbbing. I knew it was wrong, but my mind kept twisting it into my own life. My sister Priya was only two years older, living in the next room, always walking around in those thin nighties that barely covered her ass.
That night the house was quiet. Mom and Dad had gone to the wedding in Delhi. Priya was in the kitchen making chai, her back to me, hips swaying in a short cotton kurti that rode up every time she reached for something. I stepped behind her, close enough that my hard dick pressed against her ass.
"Bhai, what the fuck?" she hissed, but she didn't move away. Her voice was low and shaky.
I grabbed her waist and yanked her back harder against me. "You think I don't see how you look at me? Those Quora stories you read at night, the ones about brothers and sisters? I know you touch yourself to them."
Priya's breath hitched. She pushed her ass back deliberately, grinding on my cock through my thin pajamas. "You're sick," she whispered, but her hand reached down and squeezed my shaft. "We can't."
I spun her around, shoved the kurti up, and yanked her panties aside. Her pussy was already dripping, slick and hot. Two fingers slid straight in, pumping her deep while my thumb rubbed her clit. "Tell me to stop then," I growled, fucking her with my hand. She moaned instead, legs spreading wider on the kitchen floor.
I pulled my cock out, thick and leaking, and rubbed the head up and down her slit. "Say it. Say you want your brother's dick."
"Fuck me," she begged, voice raw. "Put it in me, bhai. I've wanted it since we were teens."
I slammed into her in one thrust. Priya cried out, clutching the counter as I pounded her tight cunt from behind. Her ass rippled with every slap of my hips. I reached around and pinched her nipples through the fabric, twisting until she whimpered. The wet sounds of my cock stretching her filled the kitchen.
We didn't make it to the bedroom. I bent her over the dining table, yanked her legs apart, and fucked her harder. Her juices ran down my balls. "You're such a dirty slut for your brother," I snarled, slapping her ass red. Priya pushed back to meet every thrust, moaning my name.
I flipped her onto her back on the table, hooked her legs over my shoulders, and drove in even deeper. Her tits bounced with each brutal stroke. She came first, pussy clenching and squirting around my cock, soaking the wood beneath her. I kept pounding through her orgasm until I pulled out and sprayed thick ropes across her stomach and tits.
We didn't stop there. I carried her to the couch, made her ride me while I sucked her nipples, then bent her over the armrest and took her ass with spit and her own cream.

Priya screamed into the cushion, begging for more, telling me how much better my cock felt than any fantasy she'd read online.
By morning we were still going, sticky and spent on the living room floor. She lay against my chest, cum leaking from both holes, and whispered, "Don't tell anyone our secret. But don't stop fucking me either."
I kissed her hard and slid back inside her swollen pussy. Some stories on Quora stay fantasy. Ours was just getting started.