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!

This smell could kill someone.
هذه الرائحة قاتلة
Was für ein mörderischer Gestank.
Este olor es letal.
Este olor mataría a cualquiera.
C’est l’odeur d’un meurtrier…
È una puzza davvero mortale.
É um fedor letal.
Этим запахом убить можно.