Ойрандзака Кьоя

A medical oni initially the main force behind the medical wing of the oni's Kyoto branch, but later becoming Rasetsu Academy's personal doctor. His Blood Eclipse Release grants him the ability to perform miraculous blood transfusions that can even restore lost limbs, although he can only do a certain amount at a time. Though often called out for being lecherous, he has a deep care for his patients.