Miyu was a happy, normal child once... over one generation ago. But one day, she learned her family's terrible secret: her parents were vampires, and she too must join them... From then on, nothing was ever the same. Larva, a Shinma (demon) made her into a vampire, and her parents gave her a purpose: destroy the evil Shinma. And so she began the hunt. With her parents imprisoned by the very beings Miyu hunts and Larva bound to her by the blood she drank from him, she does her best to return the Shinma to the Dark, where they belong. Larva guards her as she hunts her sworn enemies, determined to redeem herself by returning them where they belong. She, in fact, is the cause of it all... Then one day, a true spiritualist named Himiko crosses Miyu's path. The lonely Miyu choses to reveal herself to Himiko, and that is the beginning of the chase. Himiko is determined to stop Miyu; Miyu needs someone she can trust, but she is afraid to trust...