Kuroneko Kareshi no Asobikata

From Girls' Generation: The werecat Shingo is able to change into a black cat, and as long as someone has the looks and body that he likes, he'll sleep with just about anyone. Falling for Shingo because he was overwhelmed by his strong masculine aura is the No. 1 popular actor, Kakami. Amongst all the playful teasing and messing around between the two, Kakami suddenly shows his beastly nature...?!