Aim for the Ace! The Movie (1979)

Hiromi, a freshman, joins her school's tennis club due to her admiration for Ryuzaki, the team's star player and senior. Ryuzaki, nicknamed "Ochoufujin" or "Madame Butterfly" for her elegant playing style, becomes a role model for Hiromi. The new coach, Munakata, pushes Hiromi to participate in an upcoming tournament, prompting her initial doubts about continuing tennis. With Munakata's guidance, Hiromi discovers her natural talent and develops an emotional connection with her coach.