Due to his insensitivity to spirits, photographer Kouhei Morioka is able to cross a psychic barrier into a long-deserted castle to investigate a girl he sees living there.
As another full moon rises, so does Hazuki's thirst for blood. Since Kouhei won't fulfill his role as her slave in this regard, she sets out to find another.
The Midos head for their family home in Kyoto on a mission of mercy. There, a pair of twins betrothed to Seiji and Kouhei take an intense dislike to Hazuki.
The count kidnaps Grandpa Ryuuhei to force the others into a confrontation where he tricks them into fighting one another. His mastery of light and illusion isn't his only weapon, as Kouhei finds out to his detriment.