Izetta is powerful enough to fight whole armies, but her strength is limited.  She can only use her abilities near certain ley lines, and outside them, she's no different than a normal girl. When the Germanian army attacks in a spot far from these ley lines, the duchy is forced into a corner: how can they repel these foes without giving up the secret of Izetta's strength?
Indeed.
أجل
Ja. Nur Menschen aus
der Umgebung wissen davon, …
Sí.
Sí.
Oui. Il n’y a pratiquement
que ses habitants qui le savent,
Sì.
Isso.