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!

Let's start practice tomorrow!
!لنبدأ التمرين غداً
Empezaremos a ensayar mañana.
Empezaremos a ensayar mañana.
On s’entraînera au lycée.
Da domani proveremo a esercitarci.
Завтра приходи на репетицию!