Tenshi, Ei-chan, and Shiratori all attend Kawagoe Academy. One day, they get pulled into the orbit of former conductor Haruo. He drags them into his newly founded boys choir where they suddenly find themselves performing a song in front of an audience!

In the same colorless school as yesterday
في نفس المدرسة عديمة الألوان بالأمس
Anche domani è oggi.
La stessa scuola bianca e nera di ieri.
É o mesmo pátio preto e branco de ontem
В той же самой бесцветной школе.