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.
So isn't it natural for any mage to 
want to become a candidate?
Sollte also nicht auch jeder Magier
ein Teufelsanwärter werden wollen?
¿No es normal que todos intentemos 
convertirnos en candidatos?
¿No es normal que todos intentemos 
convertirnos en candidatos?
Dunque, non è normale che le persone
aspirino a diventarlo?
Então os magos não deveriam
 tentar se tornar um candidato?