The original manga focuses on Tsubasa (Tsuchiya) who saw an inspirational brass band performance at the finals of the Japanese high school baseball championships one summer. She vows to join the band once she enters high school, and she happens to meet a certain boy there.
The film is directed by Takahiro Miki (live-action Ao Haru Ride) and is produced by TOHO Pictures. Filming started this month and is set to premiere in August 20.
[Source: Anime News Network]