Ryouhei Kuroiwa commands the Shibuya Police, the sole law enforcement body thrust into a fractured, post-apocalyptic future. Tasked with maintaining order in a city besieged by chaos and encroaching dangers, he enforces rigid protocols and prioritizes swift, decisive action. A brash, no-nonsense leader, his reputation as a sharpshooter mirrors his uncompromising methods, fueling tensions with figures like Mayor Seiichirō Muta, who favors diplomacy with the hostile Revisions over Kuroiwa’s aggressive tactics.

Surveillance systems and tactical coordination form the backbone of his strategy to safeguard survivors, cementing his authority within Shibuya’s provisional government. Though his past remains largely undisclosed, his rank suggests a career forged through police hierarchy. Amid the crisis, he spearheads security operations, frequently butting heads with civilians and officials over resource allocation and survival tactics. His dealings with protagonists like Daisuke Dojima and Milo underscore his preference for neutralizing immediate threats over appeasing factions or pursuing alliances.

Kuroiwa’s identity remains anchored to his duty as an enforcer of stability, his choices driven by an unyielding allegiance to law enforcement ideals. Even as the collapsing world tests the limits of traditional authority and ethical boundaries, his resolve never wavers, framing him as a steadfast pillar of control in an unraveling reality.