Shuu is the quiet and aloof member of Team Otori. After the death of his father, Shuu wanted to make his mother happy by imitating the musicals he saw on television, which led to him pursuing the musical world. According to Izumi, being late for the musical department auditions has caused Shuu to be a member of Team Otori even though he had the skills to become a member of Team Hiragi. He works part-time at a bar with a piano, because he wanted to work in a place with something musical-related. His piano skills are self-taught, while his drawing skills are poor. His roommate is Tsukigami Kaito.