The spin-off novel of the Hibike! Euphonium series titled Hibike! Euphonium Series Rikka Koukou Marching Band e Youkoso.
The story focuses on Rikka High School Marching Band. Sasaki Azusa, Kumiko's friend from middle school, is the main character of this novel. The story is set in about the same time as the main series but it is told from Rikka High School's perspective instead of Kitauji's.
