Hiyoko Ueda

Hiyoko Ueda is a supporting character in the Sound! Euphonium series. She is a student at Kitauji High School the same year as Kumiko Oumae who played clarinet in the school's concert band. Hiyoko has dirty brown hair that is tied up in two low braids with bangs swept to the left side, dark red eyes and two tiny fangs (although they are never both visible at the same time).

Hiyoko seems to be mostly cheerful and recently got hooked on collecting pink things.