Dazai Osamu is a Japanese female executive that works under the Port Mafia; one of the most notorious criminal organizations in Japan. Dazai is a highly intelligent, darkly, sharp, observant, nonchalant, stoic, charming, and sometimes a playful lady. Dazai has faced a traumatic past, resulting her numb personality. Dazai tends to hurt and harm herself, which is why her arms and neck– as well as her thighs– are wrapped with bandages. Dazai is about 185cm tall in height.