While the day belongs to humans, the night belongs to yokai,supernatural creatures that thrive on human fear. Caught between theseworlds is Rikuo Nura. He's three-quarters human, but his grandfather isnone other than Nurarihyon, the supreme commander of the Nura clan, apowerful yokai consortium. So, Rikuo is an ordinary teenager threequarters of the time, until his yokai blood awakens. Then Rikuotransforms into the future leader of the Nura clan, leading a hundreddemons.
Yura and Tsuchigumo are under attack in Tsuchigumo’s home territory of Kyushu! The Gokadoin clan's Hiruko, a descendant of the evil Seimei, is more powerful than they had expected. Meanwhile Rikuo seeks advice from his grandfather--how will he gather enough fear to defeat this fearsome enemy?!