A high school girl with overwhelming literary talent shakes up the lives of those around her with her brilliant spontaneity.

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.

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

In their last year of high school, two girls in the brass band club perform a song inspired by a fairy tale that parallels their friendship.

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.

When a powerful new Makamou attacks and defeats Hibiki, Asumu dives into Takeshi’s history and discovers a book that details the ancient Oni and a boy sharing his name. As he reads on, he learns of the tensions between humans and Oni as they struggle to stop the Orochi Makamou, but will he discover the key to defeating the new Orochi in the present?

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.

Kazuo Kudo returns to his hometown of Hakodate with his wife because of his autonomic ataxia. Kazuo, who is not able to work and has to attend the psychiatry regularly, continues to run in the city of Hakodate for mental treatment on sunny days and rainy days. When Kazuo comes to communicate with the young people he meets on the street, something begins to change...

Awaiting new club leader Kumiko is the Ensemble Contest -- a.k.a. "EnCon"-- and the school's preliminary competition to determine the representative team to participate. Kumiko tries her best to make it to the preliminaries without incident, but the concert band club is so large that there seems to be no end to the problems... And as the club leader, she finds herself busy consulting on all sorts of matters. While the club members are deciding on their teams, Kumiko herself hasn't even decided which she will join...