"Private Tensho Academy" is located in the seventh district of the huge academy city cluster. The transfer student Otonomiya Saku, who is worried and not good at speaking, feels the joy of getting along with his peers after getting along with classmates with rich personalities in the singing club and the archaeology club. The encounter with Kagura Sosuke, who looks cold but is passionate inside, and Uta Uta, who speaks surprisingly and unpredictably, also makes him deeply feel the joy of "music". There are laughter, tears, and occasional quarrels. As the days go by, he finds that he is changing in a way that he has never experienced before... This is a youth story about the efforts of young people to live.