Kento Yudai, a former Yakuza enforcer, was feared for his deadly skills, losing count of his victims. His life changed tragically when his nephew, idolizing Kento's gangster lifestyle, spiraled into madness and died. Overcome with guilt, Kento abandoned the Yakuza, vowing to isolate himself to prevent further harm. Now a solitary figure, he roams the streets, haunted by his past and the lives he shattered, avoiding personal connections to atone for his sins.