Wrapped in an everlasting love that will never change! In order to change her mediocre self, Katsura has been going through adventures, taking advice from the mysterious angel (?!) Muubu. She is puzzled by Muubu's words, “The true love is you,” but she can't make up her mind to part ways with him... Can Katsura become a “good woman” by following through on her original intention?