As a Hashira of the Demon Slayer Corps, Douma is one of the most powerful and skilled slayers in the entire organization. His combination of combative prowess and his potent cryokinetic ice breathing technique in battle is powerful enough to overwhelm and defeat upper He was greatly enthusiastic in regard to his duties as a Hashira, and often came across as sweet. charismatic, and friendly. He loves his adopted daughter, Nozomi who was turned into a demon in hopes of finding a cure for her.