The apartment reeked of fox musk and heat. Lena slammed the door behind her, ears flat, tail thrashing. Her brother Jax stood in the kitchen, shirtless, fur damp from the shower, his sheath already bulging.
"Couldn't stay at the club," she growled. "Too fucking horny. You smell it too, don't you?"
Jax didn't answer with words. He crossed the room in two strides, grabbed her by the hips, and shoved her against the wall. His muzzle crashed into hers, tongue forcing past her lips as his paws ripped open her jeans. "Been waiting for you to admit it, sis. Your cunt's been dripping for your own brother all week."
Lena moaned into his mouth and yanked his pants down. His cock sprang free, thick, red, and already leaking. She wrapped her paw around it and stroked hard. "Fuck, Jax. Knot's already swelling. You gonna shove that thing in your little sister?"
He spun her around, bent her over the counter, and tore her panties aside. Two fingers shoved straight into her soaked pussy. "This hole's mine tonight. Say it."
"It's yours," she panted, pushing back on his fingers. "My brother's cock owns this cunt."
Jax pulled his fingers out, lined up, and slammed home in one thrust. Lena yipped, claws scraping the countertop as his thick shaft stretched her open. He didn't wait. He fucked her like he hated her, hips snapping, balls slapping her ass with every drive. His knot bumped her entrance, threatening to lock.
"Harder," she snarled. "Breed your sister, you dirty fuck."
He grabbed her tail, yanked it up, and pounded deeper. Wet sounds filled the kitchen. Her juices ran down his balls. Every thrust made her tits swing and her claws dig deeper into the wood. Jax leaned over her, teeth grazing her neck.
"Gonna knot you right here," he rasped. "Fill you up with your brother's cum. You want that, slut?"
"Yes," she whined. "Knot me. Cum in me."
He drove forward harder until the knot popped inside with a wet sound. Lena screamed as it swelled, locking them together. Jax's cock jerked and he started pumping thick ropes of cum straight into her womb. She came with him, pussy clenching and milking every spurt while her tail thrashed between them.
They stayed locked, panting. Jax reached around and rubbed her clit through the aftershocks. "Not done yet, sis. Bedroom. Now."
He half-carried, half-dragged her down the hall, knot still tying them. Once on the bed he rolled her onto her back, lifted her legs, and kept grinding the locked knot against her cervix. Lena's eyes rolled back.
"Look at you," he said, voice rough. "My sister's cunt stuffed full of my knot and cum. You love being a filthy incest whore."
She reached down and squeezed his balls. "Shut up and fuck me again."
When the knot finally deflated enough, Jax pulled out with a gush of cum. He flipped her onto all fours and mounted her again, driving back in without mercy. This time he went slower, deeper, making her feel every inch.
His paws pinned her shoulders, claws pricking fur. Lena pushed back, meeting every thrust, tail curled around his waist.
"Talk to me," she demanded. "Tell me how wrong this is."
"Wrong?" Jax laughed darkly and slammed in harder. "Fucking my own sister raw? Yeah, it's wrong. That's why your pussy's squeezing me so tight. You get off on it just like I do."
He reached under her and pinched her nipples through her fur. Lena howled and came again, soaking the sheets. Jax followed right after, flooding her a second time. Cum leaked out around his cock with every pulse.
They collapsed sideways, still joined. Jax licked the sweat from her neck. "Round three in the shower," he muttered. "Then I'm bending you over the couch and making you suck it clean."
Lena grinned, fangs showing. "Only if you call me your little sister while you do it."
Jax's knot twitched inside her. "Deal."
