フィル, The succeeding "Sword Saint" (『剣聖』をつぐ者), Heir to the Sword Saint, Sword Student
Fir is a playable character from Fire Emblem: The Binding Blade. She is the daughter of Bartre and Karla making her the niece of Karel. She can be recruited only by speaking to her with Noah. She makes a brief cameo appearance in Chapter 17 of the Hasha no Tsurugi manga. Source: Fire Emblem Wikia