Kumiko Oumae (黄前 久美子 Ōmae Kumiko?) is the main protagonist of the Hibike! Euphonium series. She is a freshman euphonium player who enrolls at Kitauji High School with the original intent of avoiding the concert band, but is coincidentally roped into joining along with her new friends, Sapphire a.k.a. Midori and Hazuki. Throughout the series she begins to change her mind about the idea of starting anew.