During their extended stay at the secluded summer training facility, Sugiyama participates in personal sessions led by his step-sister Mio that steer away from conventional tennis drills. His doubles partner Saeki, after observing these exchanges, begins to form her own intentions that gradually affect the group's atmosphere. Amid ongoing team practices, these layered motivations create subtle shifts in focus and interaction. Sugiyama navigates the resulting tensions while trying to maintain balance within the camp's structured environment.
