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!

Did I misunderstand?
هل أسأتُ الفهم؟
Habe ich mich etwa
in dir getäuscht?
¿Entendí algo mal?
¿Lo he entendido mal?
Je me suis trompé sur ton compte ?
Ho fatto forse una supposizione errata?
Eu me enganei?
Я чего-то не понял?