Yuzuki, a soft-spoken girl, is unexpectedly taken to an other realm known as Shinga after her phone emits a bright light. The odd location is reminiscent of the Sengoku era, a tumultuous period in Japanese history marked by continuous civil conflicts that destroyed the country. The Gekkazoku, tribes of non-human beings like as vampires and werewolves, coexist with humans here. Himemiko, a lady with the power to defend Shinga, was in charge of keeping the peace. However, the world has been thrown into disorder as a result of her strange absence. Yuzuki must now find Himemiko in order to return home, but the ongoing battle between the warlords only slows her down.