Itto is a kind collage senior but since he doesn't pay attention in class he has pretty bad grades and isn't the smartest. A lot of people fear him for his large, muscular build and the fact that he's an oni but he's really just a softy. An oni is a type of demon who has red or blue marks over their body and matching horns depending on what kind of oni they are. Itto is a red oni. He's one of the only oni that actually stay in society.