Same year as Hana. Seemed to have a long running rivalry with Renji from middle school. Provoked Renji on the first day of school by mentioning his brother, backed off after Renji grew angry. During the First Year War, his opponent was Amachi Hisashi, who promptly broke his arm and started kicking him when down. Later joined the Hana-gumi, though initially reluctant to join. Renji later persuaded him by telling him that "Every family needs a shadowy guy like you."