Yoshikawa Yuko is considered a normal high school girl, but the incident happened in her class turned her into a shut-in. Ten days after that, as she went outside to buy groceries, she was killed by a boy who mistook her as his crush. But her life is not over yet. She was then reincarnated in the world called Excelia as Annette Mana, which somehow has some connection with her from her dream. But her reincarnation has made her got some fragmented memories of an unknown girl named 'Yumeha'. 'What's her purpose of her reincarnation? And what's her connection with Yumeha?' As she is contemplating that questions, she has to choose which path should she take, even if it means she has to dye her hands in red.