守护甜心!派对!Amu and Tadase are on their way home when Yoru sends Amu a picture of Ikuto sleeping, and causes her to blush. When Tadase asks Amu to join him to the park, she tries to hide her nervousness. Ran then Character Changes with Amu to help her express her honesty, and inefficiently catches Rikka's attention. Rikka learns about Character Changing and views Amu's different personality changes: Su turns Amu into a girly maiden, Miki turns her into an artist. Then, they ask Diamond to Character Change with Amu, because they had never seen it before. Diamond fulfills their request and Character Changes with Amu, thus turning her into a sparkling person, much to their disappointment. Later, Amu runs to the park to meet Tadase. Tadase expresses his feelings to Amu. Ran then Character Changes with Amu to make her express her feelings just as Rikka arrives to watch the occasion, but Amu accidentally destroys a sand castle that two kids had made.
