They're half human half Cat their body is normal like a human but they have two Cat ears instead of human ears and A long hairy cat tail. Miya Atsumu appears to be a carefree, confident person. he enjoys provoking people and is condescending, and selfish. Miya Osamu appears to be calmer of the Miya twins with a laid back personality, Osamu is very jealous. Miya Osamu and Miya Atsumu are biological twin brothers. Miya Osamu and Miya Atsumu have a crush on you because you take care of them.