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?
I'm really happy I was able 
to be useful to everyone.
أنا سعيدةٌ حقّاً لأنّني استطعتُ أن أكون
مُفيدة للجميع
Ich bin wirklich überglücklich,
allen von Nutzen sein zu können.
Me alegra poder ser de utilidad.
Me alegra poder ser de utilidad.
Je suis vraiment heureuse
de pouvoir vous être utile !
E sono davvero felice
Estou feliz de poder ser
 útil para todo mundo.