Nakagawa Natsuki is one of the euphonium player in the band but lost the audition spot to Kumiko.
She seem disinterested in joining band practice for the national goal but became more serious in auditioning once she saw her junior trying hard.
in the anime, Natsuki tries very hard to help Nozomi able to join back with the band. She also try to help mend problems within Nozomi and Mizore.
At the end of the anime, Natsuki is elected as the vice president of Kitauji brass band club.
This model is once again created by the talented S.V pepakura designer.