3rd year, class 3, is a classmate from Akira's school. His real name is Saji Kazuma but everyone knows him better by his nickname, Zaji. He's a delinquent with perverted thoughts about women who never takes things seriously and loves to joke. He tends to let his emotions get the better of him, like when punching Yoshimoto when he was wrong about the monsters and panics about it. He used to be childhood friends with Yoshimoto until his grades fell in junior high and they became distant. He tried to become friends with him again, but later discovered they were just using him to escape and Yoshimoto kicks him overboard. He later decides to join up with Akira's group and becomes good friends with them