Aoi Saitou

Aoi Saitou is the secondary character of Sound! Euphonium series. She is a third-year student of Kitauji High School who played a tenor saxophone in the school's band. Aoi is a teenage girl of below-average height and build with approximately shoulder-length black hair that fades to dark green where it is tied in two braids with bangs clipped back by two light blue barrettes on both sides and light green eyes. She wears the standard Kitauji High School uniform for female third-year students. Aoi is a very friendly and disciplined girl who is rarely seen being mad or upset, in which she is calm in most situations where she takes everything nicely and she is also shown to be mature, reliable and understanding as she is seen giving Kumiko Oumae advice, which is why she is also seen as a responsible girl.