Sayuri Akino  

, 秋野 沙友理

Tsubasa's classmate, who is characterized by her raven-hair, reserved demeanor, and preference for standard Japanese over the Hokkaido dialect, embodies the opposite of Minami. While she enjoys playing video games, this individual also places a strong emphasis on personal appearance, frequently perusing fashion and makeup magazines in an effort to fit in. Due to excessive sweating, Sayumi eschews physical activity, leading her to become reclusive and avoid social interaction. As a result of having no friends, she finds solace in Tsubasa's company and eventually forms a bond with both him and Minami.