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.
but I didn't think it'd be so stimulating.
aber ich hätte nicht gedacht,
dass es so stimulierend wäre.
pero no pensé que sería tan estimulante.
No pensé que sería tan estimulante.
mais je ne m’attendais pas
à un tel choc !
ma non pensavo sarebbe stato così bello...
mas não sabia que era 
assim tão estimulante.