Hasegawa Seiji

He belongs to the greatest Oni clan in all of Japan.

He looks almost human, in a black t-shirt and shorts, with a purple chain around his neck and waist; his purple horns give away that he's an Oni. He loves cybernetic things and chains, constantly wears the same clothes, and enjoys collecting swords and other military paraphernalia from his time. He lives in the remote Japanese province of Murasakibi. He's a huge fan of cooking, but he doesn't tell anyone. He's also a passionate fan of history and martial arts, and dislikes anything related to other Oni clans, as they betrayed him long ago.