Fantamir
Mira is the daughter of the great psychic of Korea. She has lost her spiritual power due to an accident in her childhood and kept wondering about what she is. She feels that she has no use because now she thinks she can't become a sorceress so she runs out of home and enters the Shindansu Academy. What Mira doesn’t know is that the Shindansu Academy is no ordinary school but it is the school that has a connection to her family!
From Tokyopop:
When a mysterious incident causes Mir to lose her magical abilities, she decides to retire and become a student in a normal school--or so she thought! To her surprise, she's enrolled in a school with a special connection to her family. Will Mir's boring new life keep her from her magical past...and her divine future?