Take my Hand (Blue Exorcist)
Kristina is the daughter of two of the most powerful angels to ever live. Shortly after her birth, demons attacked Tengoku (heaven) and soon an all out war had began. Fearing their daughters safety,they sent her and about 50 other angels to Assiah. The most powerful angels, The Guardian Angels, performed a ritual that extinguished all evil from the lords land. The Guardian angels lost their lives, and made sure that a portal could not be made to Tengoku ever again.As a young child, Kristina shortly learned that most humans could not see her, and that's when she meets Father Fujimoto. He takes the young angel in, and raises her. Like Satan, the Guardian Angels posses a powerful magic, including Kristina. When Rin Okumura begins to have trouble controlling his flame, Kristina is the only one who can help him. When Satan tries to turn Kristina into a Fallen, what will happen to her?
Sorry if it sounds lame, I promise it will be better!!!!!!!!!!!!!!