Yumi Kiba formerly known as Mariah, is a former Exorcist who was excommunicated after she found out about the truth of the death of God of the Bible. Yumi begun to attend Kuoh Academy as a second-year student. She appears in the Fanfiction The Twin Dragons. Later Yumi was reincarnated as an Angel by the Great Seraph, Gabriel through one of her Brave Saints, her ranking is "Ace". Yumi had soon became a swordswoman of the Avalon Team, she wield one of the last Holy Swords, Galatine.