He pushed open the door to her room without knocking, the way he always did when their parents were out. Riya was on the bed in just a thin tank top and panties, scrolling on her phone, her dark skin glowing under the lamp. At twenty-two she was all curves, heavy tits and wide hips, the kind of body that made his cock twitch every time he looked at her.
"Close the door, bhai," she said without looking up. Her voice was low and teasing. He locked it and stripped off his shirt, already hard in his shorts.
She finally glanced over and smirked when she saw the bulge. "Again? You're such a horny bastard."
"Shut up and spread your legs," he growled, climbing onto the bed. He yanked her panties down in one rough pull. Her pussy was already wet, the dark lips glistening, a neat strip of black hair above them. He shoved two fingers straight inside her without warning. Riya gasped and arched, her cunt clenching tight around his knuckles.
"Fuck, you're soaked," he muttered, pumping his fingers hard and fast. "Been thinking about my cock all day, haven't you?"
She moaned and nodded, hips rolling to meet his hand. "Yes, bhai… put it in me. I want that thick dick stretching my pussy."
He pulled his fingers out, sucked them clean, then freed his cock. It was long, veined, and dark, the head already leaking. He slapped it against her clit a few times, making her whimper, then drove straight in balls-deep in one thrust. Riya cried out, legs wrapping around his waist.
He fucked her like he hated her, hard and relentless, the bed creaking under them. Her tits bounced with every slam, nipples dark and stiff. He leaned down and sucked one into his mouth, biting just enough to make her yelp and squeeze his cock harder.
"Take it," he grunted against her breast. "Take your brother's cock like the slut you are."
Riya's nails dug into his back. "Harder… fuck me harder, bhai. Fill your sister's cunt."
He flipped her onto all fours and slammed back inside, gripping her ass cheeks and spreading them so he could watch his cock disappear into her dripping hole. Her juices coated his shaft and ran down her thighs. Every thrust made wet slapping sounds that filled the room.
He reached under and rubbed her swollen clit in fast circles. Riya buried her face in the pillow and moaned loud, pushing back to meet him.
Her pussy started fluttering, getting tighter, and he knew she was close.
"Come on my cock," he ordered. "Come for your brother."
She did, shaking and gasping, cunt pulsing around him. He kept pounding through it until her legs gave out, then pulled out and flipped her onto her back again. He straddled her chest and fed his slick cock between her tits, fucking them while she licked the head on every thrust.
When he couldn't hold back anymore he shoved back into her pussy and came deep, flooding her with thick ropes of cum. She clenched around him, milking every drop, eyes half-lidded with satisfaction.
They stayed like that, breathing hard, his cock still twitching inside her. After a minute he pulled out and watched his cum leak from her used hole. Riya reached down, scooped some onto her fingers, and licked them clean with a filthy smile.
"Round two in the shower?" she asked.
He grinned and dragged her off the bed by the wrist. "You're not walking straight tomorrow, little sister."
They fucked twice more that night, once against the bathroom wall and once with her riding him slow and deep until they both came again. By morning her thighs were sticky and marked with his fingerprints, and neither of them cared who might notice.
