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.
That's a demon lord candidate for you.
Das ist ein wahrer Teufelsanwärter.
¡No por nada te llaman 
candidato a rey demonio!
¡No por nada te llaman 
candidato a Rey Demonio!
Tu n’es pas un prétendant
pour rien !
Come mi aspettavo da un candidato 
a Signore dei Demoni.
Isso que é o candidato lorde demônio-kun.