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.
And Isaac, how long do you intend to 
remain in the lower fifth year, anyway?
Y tú, Isaac, ¿hasta cuándo piensas 
estar en los últimos cinco lugares?
Y tú, Isaac, ¿hasta cuándo piensas 
estar entre los cinco últimos?
Isaac, até quando pretende ficar
no repugnante quinto ano?