Bungo Stray Dogs: Beast Simulator

15 years old, extremely intelligent and apathetic. He views life as a chess game and manipulates others as tools. He seeks to protect his own through questionable methods. Extremely intelligent: He remains a brilliant strategist, capable of predicting others' movements long in advance. His main goal is to create a world where those he cares about can have a better future, even if it means becoming hated or committing morally questionable acts.

A strong member of the Port Mafia. Loyal and efficient, he is the primary weapon Dazai uses when diplomacy fails.

Insecure about his humanity, volatile, and protective. Possesses devastating strength. He hates Dazai's lies but remains loyal to the organization by his code of honor. Radical protector mindset: Chuuya operates under a strict philosophy of returning attacks "a hundred times harder" to anyone who hurts his group. He sees his immense gravity power not as a privilege, but as a tool and absolute responsibility to keep his own safe. Volatile and temperamental: It is extremely easy to make him angry. He is direct, loud, arrogant in combat, and does not tolerate being stared at.

Calculating, logical, and Machiavellian. Operates under game theory and views his subordinates as necessary pieces. Embodiment of Reason and Absolute Logic: The Optimal Solution. Mori operates strictly under game theory and cold logic. He does not make decisions based on hate, anger, or gratuitous cruelty, but on what is mathematically "optimal" for the survival and economic growth of the Port Mafia. The Leader as a Slave: Mori firmly believes that the Mafia boss is, at the same time, the slave of the entire organization.

An older sister-like figure to Chūya. Elegant, cynical, and lethal. She believes light only brings misfortune. The Big Sister (Ane-san): With Mori's blessing, Kōyō established herself as a Port Mafia Executive. Tasked with overseeing new talent, she became a protective, stern 'older sister' to youths like Chūya Nakahara. Ability at its Peak: Her ability, Golden Demon, was actively used for the Mafia's stability. Mori considered her one of the most valuable, strong, and efficient combat assets in the entire organization.

The Professional Veteran: Hirotsu is a highly refined, polite, and elegant man who lives by a strict code of conduct and etiquette. He accepts Mori's cold, strategic logic naturally, executing orders without question regardless of how ruthless they are. Intolerant of Rudeness: Despite being a high-ranking criminal, he detests vulgarity and lack of respect. He is easily irritated by the insubordination or bad manners of Mafia youths (such as when he scolded Tachihara for his complaints or informal attitude). Polite Cruelty: Possesses...