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!

If only the principal weren't involved!
!ليت الناظرة لم تكن في الموضوع
Alles wegen der Direktorin!
Ojalá no hubiera aparecido la directora…
Ojalá no hubiera aparecido la directora…
Si seulement la directrice
était pas là…
Se solo non ci fosse la preside.
Só porque a diretora estava junto...
Если бы только директриса не влезла!