Liese, the last Trinity Seven, appears in the Eternal Library bearing a demon lord seal, making her a demon lord candidate, as well. She tries to entice Arata to join the evil mage side to help save Hijiri, and kisses Arata while he's unsure what to do. Arata has his magic stolen from him, and Liese decides to attack the school.
Magic is the power that gives 
mages their existence itself.
Magie ist die Kraft, die einem
Magier die Existenz gibt.
Como magos, la magia es lo que 
sustenta nuestras existencias.
Como magos, la magia es lo que 
sustenta nuestras existencias.
La force magique d’un magicien
n’est autre que sa force vitale.
La magia conferisce ad ogni mago
la sua stessa esistenza.
A magia é o poder que 
dá a existência a um mago.