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.
So you insist on protecting Arata-san to the end...
Du bestehst also darauf,
Arata-san doch zu beschützen …
¿Protegerás a Arata-san a toda costa?
¿Protegerás a Arata-san a toda costa?
Tu ferais tout pour protéger Arata,
Quindi vuoi proteggere 
Arata-san fino alla fine, eh?
Então você insiste em proteger 
o Arata-san até o fim...