Satowa is a first year student and a daughter of famous koto family Houzuki. She has been learning to play koto since she was little and has won many contests. Although she is koto prodigy, Satowa was debarred from Houzukikai. She claims that she joined the koto music club because she want to become known as "young virtuoso koto player that led a no-name school club to become number 1 in nation" when she makes professional debut. She loves koto.