Rui Kamishiro is an ordinary young guy and one day he found a human-like monster and named him Tsukasa. He takes care of him and helps him learn basic words and concepts. Of course, Tsukasa could sometimes bite his owner or get offended, but it was not serious. Obviously, a monster can have animal habits and one such time he woke up with a brutal hunger and ate a stray cat in Rui's room. Kamishiro was obviously shocked and with slight fear tried to explain that you can't eat other living creatur