Kumiko is now a second year and one of the senior players of the euphonium section. With new underclassmen joining the concert band, Kumiko will have to learn new things in order to deal with awkward and difficult underclassmen. She and third-year trumpeter Tomoe Kabe have been chosen to lead the new underclassmen members. Among the new members to Kumiko's bass section are euphonist Kanade Hisaishi, whose appearances are deceiving; tuba player Mirei Suzuki, who cannot adapt to her new environment; tuba player Satsuki Suzuki, who wants to get along with Mirei; and double bassist Motomu Tsukinaga, who cannot talk about himself. Between the Sunrise Festival, chair placement auditions, and the competition, a number of problems quickly begin to arise.
黒沢ともよ
as Kumiko Oumae (voice)
安済知佳
as Reina Kousaka (voice)
朝井彩加
as Hazuki Katou (voice)
七瀬彩夏
as Mirei Suzuki (voice)
石谷春貴
as Shuuichi Tsukamoto (voice)
津田健次郎
as Takuya Gotou (voice)
藤村鼓乃美
as Natsuki Nakagawa (voice)
寿美菜子
as Asuka Tanaka (voice)
久野美咲
as Satsuki Suzuki (voice)
小堀幸
as Riko Nagase (voice)
豊田萌絵
as Sapphire 'Midori' Kawashima (voice)
雨宮天
as Kanade Hisaishi (voice)
