Douma is a demon affiliated with the Twelve Kizuki, holding the second highest position, Upper Rank Two. He is also the leader of the Eternal Paradise Faith, a cult dedicated to worshiping Douma and a place where he listens to all his followers' troubles and gives them advice. It also acts as a place for Douma to capture and kill humans. Douma is outwardly friendly, possessing an approachable and charismatic air. People describe him as talking and acting in a calm and carefree manner.