Fire Emblem if: Nibelung no Hokan  

Fire Emblem Fates: Nibelung's Crown, ファイアーエムブレムif ニーベルングの宝冠

A manga adaptation of Fire Emblem if that depicts the story of Leo, the second royal prince of Nohr. It is a side-story to the game and it follows the path of Birthright. The Avatar is depicted in its female incarnation.