Even after Camio reveals himself, William remains concerned only with his grades and tuition and tries to distance himself from the demons and their political war.  Unfortunately, he soon finds himself roped into another problem when the Headmaster asks him to find the source of a mysterious singing voice that's been disturbing students late at night.
He called it a token of his gratitude 
for the exceptional hired help
¡Es una prueba evidente que el donante 
está agradecido de nuestra escuela
¡Es una prueba evidente que el donante
está muy agradecido con nuestra academia
Ele disse tê-lo feito devido a
 ajuda excepcional que a escola