The third Guardian Character, Su, represents Amu's desire to be more caring and improve her domestic skills. However, Su is prone to silly mistakes. She is very fond of Amu's teacher, Yuu Nikaidou, after helping Nikaidou realize that he was a good person and can still pursue his own dreams. Amu gains an improvement in cooking and sewing skills during Character Change, as well as becoming "too girly". During Character Transformation, Amu becomes Amulet Clover.