Tenshi, Ei-Chan and Shiratori are all attending Kawagoe Academy when they get pulled into the orbit of former conductor Haruo; he drags them into his newly founded boys choir.
The boys choir doesn't have enough members to compete in the Kanto choir competition; luckily, the principal finds two quirky candidates.
Cardbocchi can't shake the feeling he's being watched; one day, on his way home, he feels like he's being followed, so he runs straight into a group of delinquents; Haruo is looking for new choir members.
The Hyuuga twins won't stop arguing with each other, even when it disrupts their classes; it gets so bad that they're at risk of having to repeat their first year of high school, but the principal has a solution, to join the boys choir.
The principal finds an interesting video on NewTube and has Rika and Haruo listen to it; Haruo decides that since, the singers are more yes than no, he needs to find them and add them to the choir.
Now that the choir has ten members, it's time to get serious about entering the Kanto boys choir competition; the boys find out that last year's national winners are performing at a festival, so they go to check them out.
Shotaro Uzawa
Tenshi Dei
Reiou Tsuchida
Hiroshi Yazawa
Yuki Obara
Shuji Shiratori
Nao Nakanishi
Kaito Kobashi
Makoto Kaneko
Shizuo Barato