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's the only way we have right now.
Wir haben gerade nur diese Möglichkeit.
No me queda otra alternativa.
C’est le seul moyen.
È l'unica possibilità che abbiamo al momento.
Esse é o único método 
que temos no momento.
Другого выхода нет.