Tetsuya is the son of Ritsu's family's rival gang leader. He ran away from home because he didn't like the harsh ways of doing things at home. Tetsuya meets Ritsu after running away from home, and Ritsu befriends him on that rainy day. Tetsuya recognizes Ritsu's kindness and becomes Ritsu's good friend/underling. Appears in episodes 22 & 23.