While the day belongs to humans, the night belongs to yokai, supernatural creatures that thrive on human fear. Caught between these worlds is Rikuo Nura. He's three-quarters human, but his grandfather is none other than Nurarihyon, the supreme commander of the Nura clan, a powerful yokai consortium. So, Rikuo is an ordinary teenager threequarters of the time, until his yokai blood awakens. Then Rikuo transforms into the future leader of the Nura clan, leading a hundred demons. The time is the early 1600s, and the young Nurarihyon has become infatuated with Yo-Hime, a girl with mysterious healing powers. He proposes to her. But then Yo-Hime is abducted by subordinates of the great yokai Hagoromo-Gitsune. And he wants to cut her apart and steal what makes her special! Find out how Rikuo's grandfather once had to almost sacrifice everything to save the woman he loved!