Season 1

The arrival of Hikuma Koichi at Misaki High School marks a turning point for its problematic students, as he persistently tries to recruit them for the brass band.

Due to harassment from the delinquents including Aoshima and Ren, the Misaki High School brass band is unable to participate in the recital.

The conflict between Aoshima and his upperclassmen Jinnai and his group became more and more intense.

Hikuma Keiichi's daughter Natsuki is scheduled to do her teaching internship at Misaki High School and join the brass band as a coach.

The Misaki High School brass band successfully completed their training camp, but Igawa's smoking problem had been brought to the attention of Vice Principal Samejima.

Hikuma, who has been diagnosed with pancreatic cancer, collapses at home.

The regional qualifying tournament for the "National Wind Orchestra Competition" has finally begun.

When Hikuma wakes up from surgery, Misaki High School brass band inform him that they have made it through the prefectural tournament.