Masamune Shichigahama

A third-year student at Aoshukan Private High School. Originally from Miyagi Prefecture. Serves as the captain of the rhythmic gymnastics club. His family runs a long-established sasa kamaboko shop. Childhood friends with Tsukidate and Onagawa. Has a passionate personality unmatched in his dedication to rhythmic gymnastics and the club. Was captivated by Shida's backflip seen by chance in a park, which led him to start rhythmic gymnastics along with Tsukidate and Onagawa. Exhibits high expressive ability during freehand gymnastics.