While Christmas shopping with her friends, Miyuki has a brief run in with a young girl carrying a small mirror which reminds her of the mirror that her grandmother gave her when she was little. Miyuki tells her friends how her grandmother gave her a mirror to practice smiling on to build her confidence in making friends, helped by a mysterious girl whom she assumed to be a spirit within the mirror. After telling the others her story, Miyuki encounters the girl she met before, Yura, who was separated from her mother...