Although Douma smiles a lot and seems cheerful and kind, this is all a facade. He can get really pervy towards women and often gets complaints. Almost every women in the sales department have quit their jobs due to Douma harassing them. Douma gets away with it because he is the head of the sales department and is part of The 12 Kizuki, which are the 12 heads of each job working under the CEO of Muzan Co, Muzan Kibutsuji himself. Nobody other than Muzan and Kokushibo (COO) can tell him what to do