Cross Ange: Rondo of Angels and Dragons

Princess Angelise of the Misurugi Empire lives a life of privilege in a world where users of an advanced magic known as “Mana” rule. But her world is shattered when she discovers that she is in fact a Norma., Angelise, the first princess of the Misurugi Empire is about to receive her crown when her brother reveals that she is a Norma.