Itsuwari no Freyja

The powerful kingdom of Sigurd has slowly been conquering all the lands that share its borders, and now it has turned its voracious attention to the small, resource-rich kingdom of Tyr. Tyr cannot hope to match Sigurd in strength, so in order to survive it must rely on the intelligence, skill, and cunning of its prince and his loyal knights. But when the prince is poisoned, a young village maiden named Freya, who bears a shocking resemblance to the fallen prince, must step into his place to save them all.