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!

Are you really a teacher here at our school?
أأنت معلّمٌ في مدرستنا حقّاً؟
Sind Sie wirklich ein Lehrer bei uns?
¿Das clase aquí?
¿Das clase aquí?
Você é mesmo professor daqui?
А вы хотя бы точно учитель?