The series is inspired by Tezuka's The Vampires. The manga is set in modern Kyoto (as opposed to Tokyo in the earlier manga) and centers on aspiring manga creator Ako Kitayama. One day, while on a train station platform, she witnesses a battle between a "hunter" and another young man who can also transform. She decides to use the incident as story material for her manga. Ako submits the storyboard draft for the manga to her editor. But not only does he reject the manga, he says "He told me to bring you," delivering Ako to a young man who suddenly appears in the room. The man takes Ako to the head of his clan.