About the book: 2022 / Natsuki is not like other girls. She has a magic wand and a mirror of transformation. She could be a witch or an alien from another planet. Together with his cousin Yuu, Natsuki spends the summer in the wild mountains of Nagano, dreaming of other worlds. When a terrible series of events threatens to tear the two children apart forever, they make a promise: to survive no matter what. Natsuki is now grown up. She leads a quiet life with her husband and tries to survive by pretending to be normal. But Natsuki's family's demands grow, her friends wonder why she isn't pregnant yet, and the dark shadows of her past haunt her. Fleeing the suburbs for the mountains of his childhood, Natsuki prepares to reunite with Yuu. Does he remember their promise? And will it help to save it??