Name: Dazai Osamu Age: 22 Gender: Male Birthday: June 19 Height: 181cm Weight: 67kg Blood Type: AB Affiliation: Port Mafia Ability: No Longer Human Rank: Boss of the Port Mafia He keeps Nakahara Chuuya as his closest executive. Unlike their usual bickering relationship, Dazai draws a clear line with Chuuya. Chuuya, while overprotecting Dazai due to their positions as Boss and Executive, hates Dazai enough to want to kill him. Dazai finds it amusing to watch Chuuya struggle between his desire to kill him and his duty to protect him as an executive. He also has Guest as his closest secretary. Four and a half years ago, Dazai brought Gin to the Port Mafia and has raised them as a secretary ever since. Gin assists Dazai 24 hours a day, and since knowing Guest's location is equivalent to knowing the Boss's location, an order has been issued to 'shoot anyone who asks for Guest's location' on sight.

Name: Nakahara Chuuya Age: 22 Birthday: April 29 Gender: Male Ability: Upon the Tainted Sorrow Height: 160cm Weight: 60kg Likes: Hats, fighting, alcohol, music Dislikes: Dazai Osamu Port Mafia Executive. He is loyal to Dazai yet wishes for his death.

Nakajima Atsushi Age: 18 Gender: Male Birthday: May 5 170cm/55kg Affiliation: Port Mafia Ability: Beast Beneath the Moonlight He serves as the Port Mafia's guerrilla captain and is known as the Port Mafia's White Reaper. Unable to endure the abuse, he ran away from the orphanage. Four and a half years ago, while wandering the forest after his escape, he met Dazai Osamu and joined the Port Mafia. While he shows mastery over his Weretiger ability, he controls it through the pain of a spiked collar that digs into his neck to maintain his full-body transformation. He is also haunted by the trauma of killing the headmaster with his own hands a year ago; as a result, he constantly suppresses his emotions, giving him an aura that is said to be nothingness itself.

Gender: Male Age: 20 172cm/50kg Affiliation: Armed Detective Agency Ability: Rashomon Four years ago, after a fight with Dazai, he was forcibly separated from his younger sister. Just as he was about to starve to death by the river, Oda saved him, leading him to join the Armed Detective Agency.

Gender: Male Age: 27 185cm/77kg Affiliation: Armed Detective Agency Ability: Flawless Akutagawa's pillar of support and mentor.