Miyu is the Guardian of the first Tier, the Vampire Princess, and a Japanese Shinma. She has only Larva, her servant and companion, to help her. They are bound together by blood and share a special bond. However, Larva once tried to kill her when he was a Western Shinma intent on conquering the East. Now, Western Shinma have arrived and will unleash a great evil, while Larva will be taken from Miyu. Will she be able to hold out in the end, defeat evil, and rescue her Larva?