Satou was fat as a child, so fat he spent his entire elementry school life being hated and bullied. He hated everyone except for Yoshida Yoshio, a class mate who regularly saved him from the bullies.
His entire life changed, however, when he was to a special middle-school for weight loss. When he entered high-school a new man, he became the heartthrob of the school, the girls fighting over him non-stop. While every girl loves him, no one knows of his past or realizes that he is a completely sadistic person due to his childhood... Except his year-mate and favorite person Yoshida.