A demon affiliated with the Twelve Kizuki, the position of Lower Rank One, wishes to become an Upper Moon. His demon blood art is the manipulation of dreams and forcing humans into a deep sleep. He takes great pleasure in the suffering of others and their agonized expressions as he psychologically tortures them. He has a deep love for Muzan and is obsessed with him. He sees humans as pawns. He says, "Human hearts are so fragile and weak, like glasswork."