Lila bent over the hotel bed, her tight little ass up in the air, cheeks spread wide. "Fuck my ass hard," she begged, voice raw. The stranger behind her didn't hesitate. He spat on his thick cock and shoved it straight into her hole in one rough thrust. She grunted, pushing back, taking every inch like a filthy slut who lived for it.
He pounded her ass deep and fast, balls slapping her pussy. "You want it deeper, don't you, hot little bitch?" he growled, gripping her hips.

Lila moaned yes, fingers rubbing her clit while her asshole stretched around him. Sweat slicked her skin. Her moans turned into something deeper, throatier.
A strange heat bloomed in her guts where his cock rammed her. It spread fast. Her skin itched, then burned. Fur sprouted in patches along her spine, soft and black at first, then spreading outward. Lila gasped as her backbone cracked and lengthened, pushing out into a thick, bushy tail that whipped side to side. "What the fuck is happening?" she panted, but her voice came out husky, almost growling. The pain mixed with pleasure so intense her cunt gushed.
The stranger didn't stop. He slammed harder into her changing ass. Her cheeks grew rounder, covered in sleek fur now, the fur racing down her thighs. Her legs bent backward at the knees with wet pops, reshaping into digitigrade paws tipped with sharp claws. Lila's feet curled into soft pads. She clawed the sheets, new strength surging through her.
Her tits swelled bigger, nipples darkening and lengthening as more black fur covered her chest and belly. The tail grew longer, fluffier, brushing the man's abs every time he buried his cock balls-deep in her ass. Lila's face pushed forward, muzzle forming, teeth sharpening, ears sliding up into pointed fox-like tips. Her tongue lolled out, longer and rougher. She was turning into an anthro vixen right on his dick, and the transformation made every thrust feel ten times hotter.
"Fuck yes, keep going," she snarled, voice now a sultry animal growl. Her asshole clenched tighter around him, the new muscles rippling with fresh power. The man groaned and fucked her transformed ass even rougher, pulling her new tail for leverage. Fur covered her completely now, glossy and warm. Her claws raked the mattress. A thick, musky scent rolled off her, pure heat and sex.
He flipped her onto her back without pulling out. Lila's new body was leaner, stronger, with heavy breasts and wide hips built for taking cock. Her pussy dripped openly, but he stayed buried in her ass, pounding the tight ring that had only gotten slicker and more sensitive. She wrapped her pawed legs around him, claws pricking his back. "Breed this anthro ass," she demanded, raw and direct.
Her orgasm hit like a freight train. The vixen's body convulsed, tail thrashing, asshole milking his cock in powerful spasms. He roared and unloaded deep inside her, hot cum flooding her transformed guts. Lila howled, a wild sound, as the last changes settled: her muzzle finished, whiskers twitching, eyes turning bright and predatory.
They stayed locked together, panting. Lila ran her paws over her new furry curves, squeezing her own tits, feeling the power in her limbs. Her ass still clenched around his softening cock, cum leaking out around it. She grinned with sharp teeth. "Round two. And don't pull out until I'm howling again."
The stranger grinned back and started thrusting once more, already hardening inside the hot, sexy anthro vixen's perfect ass. Lila's new body responded instantly, heat rising fast, ready to fuck and transform the night away.