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 don't feel any magic from 
the grimoires, either.
Von seinen Büchern spüre
ich auch keine Magie.
Los grimorios también estás agotados.
Los grimorios también están agotados.
Et ses grimoires non plus.
E non ne sento neanche nei grimori.
Também não sinto nada dos grimórios.