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.
Why don't you come to my side?
Willst du auf meiner Seite stehen?
¿Quieres unirte a mi bando?
¿Quieres unirte a mi bando?
tu ne voudrais pas me rejoindre ?
Perché non vieni dalla mia parte?
Quer se juntar a mim?