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.
No student's going to be up singing at 
a water mill in the middle of the night!
¡Ningún alumno iría a cantar 
al molino en plena noche!
¡Ningún alumno iría a cantar 
al molino en plena noche!
Nenhum aluno sairia para cantar
 no moinho d'água no meio da noite!