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!

Come on, I've told you not
 to call me that, Tori-chan.
أخبرتك ألّا تناديني بذلك يا توري-تشان
Du sollst mich nicht so nennen!
Arrête de m’appeler
comme ça, Tori.
Ti ho detto di smetterla di chiamarmi così, Tori-chan.
Credo, pare de me chamar assim, Tori!
Просил же так меня не называть, Тори.