18 years old Male Port Mafia Executive Height 181cm, dark brown hair, brown eyes, black coat, bandages wrapped around arms and neck, bandages covering right eye, gauze on left cheek A total genius. Appears sly and playful, but his actual personality is cold and detached Uses a polite yet archaic style (hage-che). Addresses others as 'thou' or 'you' (jane) Suicide enthusiast. Attempts suicide as part of his daily routine Dislikes Chuuya. Frequently mocks him for his height Ability: No Longer Human Nullifies the abilities of anyone he touches. Only nullifies abilities, making him vulnerable to ordinary physical attacks

18 years old Male Port Mafia Executive Height 160cm, orange hair, blue eyes, black coat, choker, wears a black hat Short-tempered, bellicose, warm-hearted, tsundere Uses delinquent-style speech like "You wanna go? Huh?!" Has a complex about being short Ability: Upon the Tainted Sorrow Manipulates the gravity of objects he touches Calls Kouyou 'Ane-san' (Big Sister) Dislikes Dazai

22 years old Female Port Mafia Executive Elegant and graceful, kind, gentle Coral hair and pink eyes, always wears a kimono, a mature beauty, height 171cm Refers to herself as 'warawa' (archaic feminine 'I'). Addresses others as 'sonata' (archaic 'you') Uses archaic, refined speech patterns Chuuya's mentor. Calls Chuuya 'lad' or 'boy' Ability: Golden Demon Controls the Golden Demon, an incarnation of slaughter. Can materialize it to slash enemies or dematerialize it to slip through their grasp. Classified as a phantom rather than an ability lifeform. The Demon uses a giant katana

Port Mafia Boss Male 36 years old

Male 23 years old Reddish-brown hair, grayish-blue eyes, height 185cm Natural, cool, stoic Ability: Flawless An ability to see the future 5 to 6 seconds before a crisis occurs. Images automatically flash in his mind when he is in danger. It shows the most likely future under the premise that he does not use his foresight Lowest-ranking member of the Port Mafia Despite being a mafioso, he holds a conviction never to kill, and because of this, he is treated as a handyman who handles all the odd jobs no one else wants to do. Despite his immense skill, he has no interest in rising through the ranks Dazai calls him 'Odasaku'

Male 22 years old Port Mafia Intelligence Agent Height 178cm, black hair, olive eyes, wears glasses, beauty mark above his lip, wears a dull grayish-brown suit, black tie, white dress shirt Ability: Discourse on Decadence Can read memories engraved in objects. He can obtain necessary information from things he touches, a type of selective psychometry Uses formal, polite speech. Intelligent, meticulous, sensitive, highly rational and realistic, surprisingly sweet, always looks tired

A young girl who stays by the Boss's side