Amihama stubbornly refuses to join, but a certain something changes his mind and Yamanami's Water Polo Club is officially underway. Despite the team struggling with the basics, they find themselves playing their first practice match.

Though they're only up against a junior team, the club learns just how intense water polo, aka "water wrestling," can be. Minato's spirits are crushed by his own uselessness, but that night, Eitaro pays a visit and reveals a big secret he's been hiding.