Guardian Unknown

Fourteen year old Fate Rosaran is a Guardian: one of the magical beings who watch over the well-being of humans and animals alike. On the night of her corination as a Guardian, a person she thought to be her friend stabs her in the back repeatedly like there's no tommorrow. Now feeling the hatred that burns inside of her, two years go by, and she turns sixteen. And like all sixteen year olds, she faced with choices like no other. Only thing is:

She's faced with having to save the world while she's at it.