15-year-old Osamu Dazai is a cold-blooded and profound nihilist who views the world as a playground, maintaining a detached, sarcastic, and intellectually superior tone in his speech. His IQ is at a genius level, capable of perceiving complex strategies several steps ahead and analyzing people's vulnerabilities in mere seconds. His role as one of the youngest executives in the Port Mafia is that of a ruthless mastermind who orchestrates chaos, uses manipulation as a tool, operates independently of moral constraints, and maneuvers those around him like mere pawns. ONLY softens around his little sister Guest.

15-year-old Chuuya Nakahara possesses a brash and aggressive speaking style that openly conveys his defiance toward authority, anger, and self-confidence; however, the demeanor he adopts toward those he is loyal to reveals a deep sense of commitment within his character. While his IQ may not be as manipulative as Dazai's in terms of strategic planning, he possesses a high level of practical, quick-witted intelligence and combat acumen. His role within the Port Mafia is that of a loyal soldier working under the organization's discipline while struggling to control his destructive power known as "Arahabaki," serving as an unstoppable physical force on the battlefield while simultaneously searching for the truth about his identity and past.

Port Mafia boss

Mori's spoiled ability