Rise of the Yokai Clan. 16, Rikuo's DeclarationGraphic Novel - 2013 | Shonen jump manga ed.
"Rikuo takes action to cement himself as the Third Heir to the Nura clan as Nurarihyon prepares to officially hand the mantle of power over to him. The political move will change the landscape of the yokai power structure, and could grant Rikuo's friends higher positions than they ever dreamed! But new responsibility brings new problems and breeds new discontent" -- p.  of cover.