Master of Archer of Black during the Great Holy Grail War, Fiore is a young woman who was born into the Forvedge family. She is the older sister of Caules. Due to a magic circuits malfunction during her birth, she became crippled and wheelchair-bound.

She later inherited the position of head of the Forvedge family and earned a high ranking position within Yggdmillennia. She is noted by Darnic, who she refers to as grandfather, to be the only magus within the clan to have true talent and so recognizes her as the future elder of Yggdmillennia.

In the end, she decides to leave the world of magecraft, as mentioned by Caules when El Melloi II asked him about her whereabouts. She presumably had the magic circuits in her legs removed so that they could be healed, as she was shown using parallel bars for physical therapy so she could become able to walk.
(Source: Type Moon Wiki)