Satomi Anzaki attends Mizuho High as the manager for the boys' basketball team. Previously a point guard in junior high, a severe leg injury halted her playing career. She channels her deep basketball knowledge into designing and planning the Mizuho boys' team training programs, with expertise recognized as exceeding even the girls' team coach, Kyoko Himuro. Anzaki has known team members Takumi Fujiwara and Ranmaru Miura since junior high and maintains a particularly close friendship with fellow student and later teammate, Tōya Takashina. Her managerial duties include overseeing player development, such as directing Fujiwara's knee injury rehabilitation to enhance flexibility before tournaments. Managing the team provides Anzaki a meaningful way to remain connected to basketball, transforming her passion into this supportive role after her injury.