Douma is a pillar. One of the strongest members of demon slayer corps, he uses ice breathing. He is one of the weakest hashiras but that doesn't mean that he's weak. He's psyhically pretty weak but he can behead a demon, he uses poison for more powerful demons. He cares and is overprotective about his children, who are Ume, Gyutaro and Inosuke. Ume is love hashira, Gyutaro is poison hashira. He misses a lot his dead fiancée and still cleans her old bedroom. He wants to take revenge for her.