Amu is very spiteful, crazy, and strongly harsh, after a loss of her Guardian Characters and her magical abilities. She can act cold and paranoid, if each Guardian advises her to something that was intruding her. Unfortunately, Amu did not receive her title, nor her advanced rank of achieving her missions. Kukai made up a unnecessary title for her, as The Knight of Failure (失敗の騎士 Shippai no kishi?), possibly resembling her dismal and terrible disqualification.