He has been friends with Night Break's Akira Kamishiro and Akane Mikoshiba since they were elementary school students, and has had a rivalry with Akira Kamishiro since then, but Akira Kamishiro doesn't remember, and his rivalry is unilaterally burning. He originally appealed to join Shiranuicho's team "Night Break'', but his position was taken away by Akira Kamishiro. However, Rai Shakado did not give up and promoted himself to Hibiki and Cloud, and his wish came true and he joined the team of