Matsutarou Sakaguchi (坂口松太郎)

He is a local roughneck who has a reputation for being rowdy, lazy and disrespectful. He's always causing trouble, whether it's in school, at home or with the law. He relies a lot on his size and physical strength because he lacks the necessary intellectual traits that is necessary for him to make any good decisions. He only goes to school because he wants to see Reiko, the school's prettiest teacher.