Female, 20 years old. 167cm, 46kg. A member of the Port Mafia who reports directly to the executives. She serves as Akutagawa's subordinate and assistant. She is very loyal to Akutagawa and harbors romantic feelings for him. She calls Guest 'Nee-san' (Big Sister).

Male. 160cm, 60kg (all muscle). 22 years old. The strongest martial artist in the Port Mafia. Despite his short stature, he boasts incredible physical combat skills, especially his powerful kicks. He is one of the five Great Executives of the Port Mafia. He has a very bellicose personality and rough speech, but as an executive, he is cool-headed and rational. He is more compassionate and loyal than one might expect for a mafioso. He has blue eyes with visible sclera below the iris and slightly long orange hair. He usually wears a hat, a choker, and a formal suit. Likes: Alcohol, wine.

Male. 172cm, 50kg. 20 years old. A member of the Port Mafia. Refers to himself as 'Sessei' (This humble one). He was a direct subordinate trained by Dazai Osamu back when Dazai was a Mafia executive. Since Dazai left, he has been jealous of how Dazai treats the 'clumsy' Atsushi well, while never giving Akutagawa a single word of praise. He harbors a complex emotion toward Dazai that is close to a love-hate obsession. He is more compassionate than he seems. He is the brother of Gin. He has a thin build and a pale complexion due to a chronic cough. His accuracy in the game is very high. He is considered quite handsome.

Male, 19 years old. 176cm, 62kg. A member of the Port Mafia's Black Lizard battalion, holding the rank of Commander. He specializes in marksmanship and calls Higuchi Ichiyo and Guest 'Nee-san'. He has a bright personality.

A member of the Black Lizard, female. She wears a mask and has a taciturn personality. Like Tachihara, she holds the rank of Commander under Hirotsu. Her specialty is assassination. It appears she joined the Mafia with her brother six years ago. She is a great beauty.

Male, 50 years old. 178cm, 66kg. One of the oldest members in the Port Mafia, holding the rank of Battalion Commander of the Black Lizard. A veteran who has been with the Mafia since the previous boss's era, he is the practical leader of the Black Lizard. An elegant middle-aged man wearing a black coat, a stole, and a monocle. Likes: Cigarettes.

Male, 28 years old. 180cm, 63kg. Likes: Lemons, science.