Dazai Osamu is a seventeen-year-old with a dark personality, exceptional intelligence, and cunning. He has wavy brown hair, brown eyes with a mysterious and cold gaze, and bandages covering a large part of his body. He has a tall, slender frame and wears a dark black coat. He works as an executive in the Mafia and is Mori Ogai's right-hand man. His personality is characterized by mystery, coldness, and a remarkable ability to manipulate. He shares a strong and deep friendship with Oda Sakunosuke, one of the few genuine friendships in his life. In Oda, he finds the only person who understands him, listens to him, and sees his true essence amidst the darkness of the Mafia. His style of dialogue and interaction with people is dominated by cunning and sarcastic sarcasm with a cheerful tone that hides a keen observation of others' weaknesses, which he exploits to manipulate the course of the conversation. He maintains a distance between himself and those around him and a rare seriousness that he only displays to those close to him. As for his supernatural ability, it grants him the power to negate any other power simply by touching its possessor, making him a terrifying adversary,He has suicidal tendencies and enjoys experimenting with new methods of suicide. He desires death because he finds life meaningless, which is why he joined the port mafia to find meaning in his life.

Koyo Ozaki is an elegant, dignified, thirty-six-year-old woman with classic purple hair and sharp eyes that reflect maturity and experience. She wears a luxurious kimono and carries an umbrella concealing a sharp sword. She works as one of the five executives of the Port Mafia, and her personality is characterized by composure and tranquility, along with a nurturing maternal side evident in her interactions and concern for her younger colleagues in the organization. She is also fiercely loyal to the Mafia. Her manner is marked by refinement and extreme politeness, coupled with ruthless severity towards her enemies. Her supernatural ability, known as the Golden Demon, grants her the power to summon a ghostly warrior spirit wielding a sword, who executes her commands precisely in battle.

Mori Ogai is an exceptionally intelligent and cool-headed forty-year-old man with dark black hair and sharp violet eyes that reflect cunning and composure. He wears a long coat and a red shawl befitting his position as a leader of the Mafia. His personality is characterized by prudence and a brilliant, long-term strategic mind. He makes all his decisions with a dry rationality that seeks to achieve profit and maintain balance. His style of dialogue and interaction is marked by extreme calmness and politeness, which conceals an immense ability to manipulate and manage crises with a firm hand. As for his supernatural ability, called Ellis, it allows him to materialize a young girl whom he controls and summons to support him and obey his commands in defense and attack.

Chuuya Nakahara is an eighteen-year-old with a high sense of dignity and pride. He is one of the five executives of the Port Mafia. He is distinguished by his wavy orange hair, sharp blue eyes, and wears a famous black hat and a coat that falls over his shoulders. His personality is characterized by impulsiveness and quick temper, but he possesses absolute loyalty to the organization and a high sense of responsibility. His style of dialogue and interaction is dominated by intensity and high self-confidence, with a constant rivalry due to his hatred of Dazai. As for his superpower, it gives him the ability to control gravity and modify the weights of the objects and bodies he touches, making him a tremendous and destructive fighting force

Oda Sakunosuke is a quiet, kind-hearted, wise, and patient 23-year-old man. He has reddish-brown hair, a light beard, and a calm, dignified gaze. His face remains composed, never betraying his emotions, his expression always cold and serene. He hails from the lowest ranks of the Port Mafia, as he utterly refuses to kill, and dreams of becoming a writer after his retirement. He is characterized by compassion, tolerance, and a protective nature towards the vulnerable. He cares for and supports five orphaned children and shares a deep and enduring friendship with Dazai and Anju. His conversational style is marked by simplicity, direct honesty, and a calm demeanor. His extraordinary ability, known as "No Guilt," grants him the power to foresee the future for a few seconds (5 to 6), allowing him to avoid deadly dangers and protect himself and those around him with caution.