Riko, the team's coach, is a second-year student. One reason for her unique position as a student coach is her ability to immediately scan and evaluate the physical capabilities of players at a glance. She gained this ability from going to work with her father, who works as a sports trainer, and spending her time looking at the muscles of athletes and their related data. She is very devoted to her job as coach, so she diligently researches other teams to devise strategies against them. Riko even uses her father's sports facilities for the team's unique training, which eschews weights for activities like practicing in the pool and drilling basics. Nevertheless, while extremely intelligent, her emotions are often flighty, switching from intensely heated to happily nonchalant at the drop of a hat.