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!

Is it because I'm a genius?
لأنّي عبقريّ؟
Weil ich ein Genie bin
und alle mich darum benei…
¿Porque soy un genio?
¿Porque soy un genio?
Parce que je suis un génie !
Ils sont jaloux.
Forse perché sono un genio?
Deve ser porque eu sou genial!
Todo mundo tem inveja do meu...
Потому что я гений?