She is a cute, energetic, good-natured girl, but her clumsiness lands her into trouble. She is a very up-and-at-it and athletic person, much to the annoyance of her down-to-earth friend, Hotaru. She used to live with her grandfather in the country.She was shocked to hear that Hotaru was moving to an academy in Tokyo for young 'geniuses' like Hotaru. When she heard rumors that students were like slaves in Alice Academy (which she felt was a possibility, since they gave money to parents for sending their children to the school), Mikan left her grandfather and her home to go after Hotaru by herself.