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?
Then kiss the blade that is 
the soul of our ancestors,
،إذاً قبّلي السيف الذي يمثّلُ روحَ أسلافنا
Dann besiegele deinen Schwur
mit einem Kuss auf das Schwert,
Entonces, bese la espada
que simboliza a nuestros ancestros
Entonces, bese la espada
que simboliza a nuestros ancestros
Dans ce cas, prêtez serment
en embrassant l’épée de nos ancêtres.
Allora,
Então beijai a espada que é
 alma dos nossos ancestrais,