Konomi Fujimura

Following their success in the qualifying round for the Kansai regional competition, the members of the Kitauji High School concert band set their sights on the next upcoming performance. Utilizing their summer break to the utmost, the band participates in a camp where they are instructed by their band advisor Noboru Taki and his friends who make their living as professional musicians. Kumiko Oumae and her friends remain determined to attain gold at the Kansai competition, but trouble arises when a student who once quit the band shows interest in rejoining and sparks unpleasant memories for the second-year members. Kumiko also learns about her teacher's surprising past and the motivation behind his desire to lead the band to victory. Reaching nationals will require hard work, and the adamant conviction in each student's commitment to the band will be put to the test.

After swearing off music due to an incident at the middle school regional brass band competition, euphonist Kumiko Oumae enters high school hoping for a fresh start. As fate would have it, she ends up being surrounded by people with an interest in the high school brass band. Kumiko finds the motivation she needs to make music once more with the help of her bandmates, some of whom are new like novice tubist Hazuki Katou; veteran contrabassist Sapphire Kawashima; and band vice president and fellow euphonist Asuka Tanaka. Others are old friends, like Kumiko's childhood friend and hornist-turned-trombonist Shuuichi Tsukamoto, and trumpeter and bandmate from middle school, Reina Kousaka. However, in the band itself, chaos reigns supreme. Despite their intention to qualify for the national band competition, as they currently are, just competing in the local festival will be a challenge—unless the new band advisor Noboru Taki does something about it.

Mizore Yoroizuka plays the oboe, and Nozomi Kasaki plays the flute in Kitauji High School concert band. As seniors, this will be their last competition together, and the selected piece "Liz and the Blue Bird" features a duet for the oboe and flute. "This piece reminds me of us." Nozomi says cheerfully, enjoying the solo, while Mizore's usual happiness to play with Nozomi is tinged with the dread of their inevitable parting. By all accounts the girls are best friends, but the oboe and flute duet sounds disjointed, as if underscoring a growing distance between them. Talk of college creates a small rift in their relationship, as the story evolves to reveal a shocking and emotional conclusion.