Anna is a student of the Academy.
As a student of the Academy, Anna was turned into a lustly girl when Beryl take control. She acted like a model student and even train herself in toilets. Filled with desire to become the best student, she asked some advices to Ross. The thunder teacher, aware that Lilina could ask her some advices, suggest her to became meatoilet and, if someone (Lilina) ask her some help, she have to turn her into meatoilet too.
We don't know what happened to her after Magical Academy's events.