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.
I still can't believe they're the ones 
giving my husband a crash course...
Ich kann nicht glauben, dass die
beiden meinen Mann trainieren …
No puedo creer que quienes estén 
entrenando a mi esposo sean ellas...
No puedo creer que sean ellas las 
que estén entrenando a mi esposo...
Qui aurait cru
qu’elles décideraient de l’entraîner…
Comunque, non posso credere che siano
proprio loro ad allenare mio marito...
Não posso acreditar que são elas que estão
 dando um treinamento ao meu marido...