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!

But greeting each other in the morning
لكن تبادل التحيّة في الصباح
Los buenos días que nos dimos
Los buenos días que nos dimos
Però il buongiorno detto stamani
diventa una breccia tra me e voi.
Mas o "bom dia" de hoje
foi a nossa epifania
Но утром мы встречаемся,