Mio has been captured by Zolgia following Maria's betrayal. Basara too is captured by Lars and brought to Zolgia's mansion. Lars' goal is to exchange Basara for Mio. He explains that he's only doing his duty as Mio's observer, but negotiations fail, and Zest slays him.
That is what has led to your defeat.
Das hat zu eurem Versagen geführt.
Esa fue la causa de su derrota.
Voilà l’erreur
que vous avez commise.
E questo ha causato la tua sconfitta.
Foi isso o que causou a sua derrota.
В этом ваша ошибка.