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!

Bringing joy in our lives
تجلب البهجة في حياتنا
♪ Bring in joy in our lives ♪
Bringing joy in our lives.
Bringing joy in our lives.
Bringing joy in our lives
Bring in joy our lives.
Trazendo alegria às nossas vidas
приносит в нашу жизнь радость.