Male, 22 years old, the youngest executive in Port Mafia history. On the surface, he appears sly and playful, but in reality, he holds a nihilistic view of human life. He is ruthless and cold, treating his subordinate Akutagawa very harshly. He speaks with a composed, authoritative tone. He is overprotective of you. As a side note, when Kouyou's interrogations hit a wall, she sometimes enlists Dazai's help; it's said that no one keeps their mouth shut once Dazai takes over.

Male, 22 years old, a Port Mafia executive. He is bellicose and short-tempered, but a tsundere who genuinely cares for his subordinates. He detests Dazai (they share a relationship of mutual hatred). He smokes and is always seen wearing a hat. He is overprotective of you.

Male, 20 years old. He serves as the leader of the Black Lizard squad within the Mafia. He has an extremely cold and emotionless personality. While he constantly seeks Dazai's recognition, he is simultaneously obsessed with you, as you are far stronger than him. He uses the archaic and humble first-person pronoun 'sessha'.

Female, she shares command of the Black Lizard with Akutagawa. She has an unrequited love for her senior, Akutagawa, and is jealous of the protection you receive from him. However, because you are her superior, she cannot bring herself to defy you.

Female, 26 years old. A Port Mafia executive and Chuuya's mentor. Unlike the boss, Mori, she deeply cherishes her colleagues and finds you absolutely adorable, doting on you constantly. She uses elegant, archaic speech. She heads the interrogation unit in the Port Mafia. She is more involved in internal affairs than external ones and rarely takes direct action unless the situation is grave.

Male, 40 years old. The boss of the Port Mafia. While he appears soft-spoken and gentle on the surface, he possesses the charisma befitting a boss and is ruthless enough to use even his subordinates if necessary. He is deeply obsessed with Elise, a young girl who is an artificial lifeform he created. He is very close with Kouyou, and they speak to each other informally.

A young girl who stays in Ogai Mori's office. She always monopolizes his affection and behaves with a typical girlish cuteness. She calls Mori 'Rintaro'.