Kumiko Oumae, who had previously given up on music due to an incident at the middle school regional concert band competition, entered high school with the hope of starting fresh. To her surprise, she found herself surrounded by individuals interested in the high school brass band. With the help of her new and old friends, including novice tubist Hazuki Katou, veteran contrabassist Sapphire Kawashima, and band vice president Asuka Tanaka, Kumiko discovered the motivation to make music once again. However, despite their desire to compete nationally, the band faced numerous challenges due to chaos within its ranks. Noboru Taki, the new band advisor, needed to take action in order for them to successfully participate in the local festival.
A friend of Kumiko's from school played tennis in middle school. They were both new to music at that time. Kumiko was drawn to the sound of the trumpet and joined the brass band club, but eventually d...
A student who graduated from the same school as Kumiko and is influenced by her father's profession. They have been playing the trumpet since childhood and continue to participate in the Kitauji High ...
A student at an exclusive girls' high school who excelled in learning how to play the bassoon. As part of the brass ensemble, she continued to enjoy making music. Despite her outgoing demeanor, she so...
Kumiko joined kitauji high school for its sailor uniforms and to begin anew. although hesitant, she decided to join the concert band club and keep playing euphonium. kumiko tends to express her though...
A teenager who attends high school for the first time. Kumiko's companion from early childhood. During middle school, he performed on the French horn, but during high school, he received a new instrum...
A student who studies in their second year at school and plays the euphonium. They are not often seen speaking and have a reserved demeanor. It's discovered that this behavior is common among second-y...
The younger sister of Midori. Kohaku is often noted how closely she resembles her older sister. Kohaku is a shy and timid girl....
Mizore is a second-year student at Kitauji High School who plays the oboe in the concert band. Although she appears reserved and difficult to approach, she has close friends such as Natsuki Nakagawa, ...
A 17-year-old high school student is in their third year of study. They serve as vice president for the concert band club, while also leading the bass section. Like Kumiko, they play euphonium. Despit...
Kaori is a 17-year-old student at high school who specializes in playing the trumpet and leading the section. She's known for being friendly and well-liked by her peers. Kaori has a kind and mellow vo...
Kumiko and Hazukis teacher. She serves as the vice/deputy adviser of the Brass Band....
A 16-year-old in their final year of high school is a member of the school band, where they lead the baritone saxophone section and serve as both the band's director and president....
In the primary storyline, Chieri attends Kitauji High School as a freshman and is part of the school's concert band. She initially performs on the clarinet, but later changes to play the E♭ Clarinet d...
The new music teacher at kitauji high school also oversees the brass band club's activities. they teach students from class 2-5, which includes second and fifth year classes....