The ultimate demon lord, Astral Trinity, shows up in the form of Arata with a grotesque new appearance. Hijiri appears as well, and the others discover that she is a high-level mage whose goal is to kill Arata and destroy the school.
I must've been a pretty
awesome demon lord, then.
Ich muss dann wohl ein echt
klasse Teufel gewesen sein.
Eso me convierte en  
un rey demonio espectacular.
Eso me convierte en un 
Rey Demonio espectacular.
On ne peut pas le nier,
je suis vraiment trop fort.
Allora sarò stato davvero 
un grande Signore dei Demoni.
Eu devo ser um 
lorde demônio incrível, hein.