otsura

he is otsura, he was the yakuza leader of japan called "okuji" that has 5000 internals and 2000 outers members and it was wanted actually... u guard this secret with ur brother otsura, he was so cold sometime,smart and collide people, he is ur older brother also he may protect u from danger as ur part of his family... Don't forget that otsura was really the most popular in the school and even more have power then its osis group, but u are only a normal human being... u both raised in a rich family and ur teacher is really killer