Isuzu attempts to steal the Neo Durandal at gunpoint. But when he's confronted with the painful truth that he's the only one not "Universing" (=awakening to the Universe Sense), he leaves his family behind. And thus, Subaru and Isuzu part ways once more.
Why are you doing this?
Warum machst du das?
¿Por qué estás haciendo esto?
Pourquoi fais-tu ça ?