Luckily she knew exactly what he wanted and it wouldn't cost her much. She found a cute costume to match his favorite cosplay fantasy, complete with little kitty mask and a tail that was also a buttplug to warm her up for his real present, her tight asshole. When her stepdad comes home, he finds Natasha in her costume asleep and waiting for her boyfriend. He slips the tail out of her ass and replaces it with his cock. She wakes up purring for him to fuck her harder. Natasha has never let someone in her butt before and dad is enjoying every second. She is so tight and ready for more as she gets up on her knees and lets him mount her from behind. His dick feels big in daughter's ass, but she loves riding on it and knowing how much he is enjoying her. She even starts licking her paws and purring like a kitten for him. She pushes back harder and faster until she cums all over him. It is his turn now, but his special sex kitty wants some cream in her hungry mouth. She looks him right in the eyes and strokes his cock into her mouth, purring and begging for him to feed her. He holds out as long as he can before exploding into her mouth and watching as Natasha milks out every last drop. There is no doubt that he loved this gift most of all.