Manga by author Ghost

Description : After moving into her new home, college senior Eva Qiao finds a stray cat in her basement. Rusty is your normal kitty boy. He sleeps a lot, purrs when pet, and he also a half-human hybrid?! Abandoned by his owner as a failed experiment, Eva decides to adopt him and quickly learns she's going to need more than nine lives to handle him.

(Will do the summary once the chapter 1 is dropped)