The lights were low in the cramped animation studio apartment, the kind of place where cartoon characters came to life after hours. Jake, the broad-shouldered bull from the late-night adult series, kicked the door shut behind him. His sister Lila, the curvy fox with the exaggerated hips and sly grin, was already sprawled on the couch in nothing but a thin tank top that barely covered her tits.
"Lock it," she said, voice low and filthy. "Mom and Dad are out recording their voices. We got the place to ourselves."
Jake didn't waste time. He stripped his shirt off, revealing the hard muscle the animators loved to draw. "Been thinking about that tight cartoon pussy all day, sis. You gonna give it up or keep teasing like last episode?"
Lila laughed, dirty and direct, then spread her legs. "Come get it, big brother. Fuck your cartoon sister raw."
He dropped his pants and his thick cock sprang free, already leaking. Lila licked her lips and crawled forward on all fours, tail flicking. She wrapped her hand around his shaft and gave it a slow, sloppy stroke.
"Goddamn, it's even bigger than in the storyboard," she muttered, then opened wide and swallowed him down. Wet sounds filled the room as she bobbed, gagging on purpose, spit running down her chin onto her tank top. Jake grabbed her ears and thrust, fucking her throat like he owned it.
"Yeah, take that dick. Suck your brother's cock just like you do in the fan art."
She pulled off with a pop, strings of saliva connecting her mouth to his head. "Your turn. Eat this cartoon cunt."
Lila flipped onto her back, yanking the tank top up to bare her heavy tits and smooth, glistening slit. Jake dove in, tongue lapping broad and rough from asshole to clit. She moaned loud, hips bucking. "Deeper, fucker. Tongue-fuck me."
He did, shoving two fingers inside her while sucking her swollen clit. Lila came fast, squirting a little, soaking his muzzle. "Shit, yes! Now put it in. Breed your sister."
Jake flipped her onto her stomach, yanked her hips up, and slammed home in one thrust. Her cartoon pussy clenched around him, hot and dripping. He pounded her hard, balls slapping, the couch creaking under them.
"Take it, Lila. Take every inch of your brother's dick." He reached around and rubbed her clit in fast circles. "You love this taboo shit, don't you?"
"Fuck yes," she gasped, pushing back to meet every thrust. "Harder. Wreck me. Fill your cartoon sister's hole."
He gave it to her, switching angles, hitting that spot that made her yowl like a fox in heat. Sweat slicked their fur.
Lila reached back and spread her ass cheeks wider for him. "Play with my tailhole too. You know I like it dirty."
Jake spat on his thumb and pressed it against her pucker, working it in while he kept railing her cunt. Lila screamed into the cushion, coming again, pussy pulsing and milking him.
He didn't stop. Pulled out, flipped her again, and drove back in missionary so he could watch her face. Her tits bounced with every slam. "Gonna cum inside you, sis. Gonna pump you full."
"Do it," she begged, legs locked around his waist. "Creampie your sister. Make it sloppy."
Jake growled and buried himself to the hilt, unloading thick ropes deep in her cartoon cunt. Lila came with him, clenching and milking every drop. They stayed locked together, panting, cum leaking out around his still-hard cock.
After a minute she grinned up at him, already rolling her hips again. "Round two. This time I ride you while you suck my tits. And don't pull out till I'm leaking down your balls."
Jake grinned back, already hardening inside her. "Anything for family, sis. Anything for this filthy cartoon fuck."
They kept going until the studio lights flicked on outside, both of them sticky, satisfied, and already planning the next scene.
