Akane Motomiya and her friends Tenma and Shimon get pulled into another world by a demon, where Akane becomes the Priestess of the Dragon God. The people of this world believe Akane is the only one who can stop the demons from taking over, but the demons have their own plans for her power. Eight men, known as the Hachiyou, possess their own abilities and are sworn to protect the Dragon Priestess, making Akane's position a little more secure.