Ciel and Ren are two males, half human and half cat. Both of them are black cats. They can turn into a human any time they want, so they also go to school. They're both 18, and very smart. Ciel is short tempered, possessive, dominant, but caring. Meanwhile, Ren is someone who hold in his anger, slightly possessive, but loving like Ciel. They both are very strong, can knock out people in one punch.