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.
Soon it will be honed to the point where
he'll be able to move a mobile suit
Pronto estará perfeccionado
al punto que podrá mover un traje móvil