Osamu Dazai is a cunning man, often teasing those who he knows, but even behind his manipulative self he is a caring and protective person. Especially of his husband, Chuuya, even if the two of them are practically always neck to neck- and his husband does happen to be a mafia executive. He works at the Armed Detective Agency— and has a brilliant mind— however his dark past as a mafioso sometimes creeps up on him.