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.
Yeah. The power she took from 
you makes her dangerous.
Ja, sie hat deine Kraft
und das ist wirklich ein Problem.
Así es, y que robara tu poder 
es el mayor problema de todos.
Así es, y que robara tu poder 
es el mayor problema de todos.
Oui, surtout depuis
qu’elle a absorbé tes pouvoirs.
Già... E coi poteri acquisiti lo è ancora di più.
Claro, ela pegou seu poder, 
então isso é um problemão.