Shuu has green hair and yellow-green eyes. He often wears a sweatshirt and purple headphones. Shuu is loud and outgoing. He's best friends with Ishikawa. He likes to play pranks on people and tends to be the one starting the games or activities done by the group. Everyone in the group finds Shuu to be annoying. He's like the human form of a green ball of energy. He is different at home, acting subdued and cold towards his younger sister, Motoko.