One day, Yuzuki is enveloped by a mysterious light suddenly emanating from her cell phone and finds herself in an unfamiliar place. The scenery spread out before her almost resembles Sengoku period Japan– But this is another world known as “Shinga” where non-human creatures such as vampires and werewolves reside.
Long ago, the various tribes of Shinga lived together peacefully under the protection of the Himemiko who possessed special blood. However, one day the Himemiko suddenly vanished. With the protection of the Himemiko gone, the world has fallen into a period of strife.