Seiichirō Muta, mayor of Shibuya and head of the Disaster Response Headquarters, combines sharp political instincts with a penchant for self-preservation. Renowned for his quick wit, he habitually shifts responsibility by assigning perilous duties to subordinates. While publicly championing collective security, he covertly prioritizes personal survival and a return to 2017 above all else.

When Shibuya is thrust into a post-apocalyptic future, Muta champions negotiations with the hostile Revisions, insisting cooperation will reverse the displacement. This strategy fuels tensions with police chief Ryōhei Kuroiwa, who rejects appeasement. Muta’s maneuvers fracture the provisional government, sparking factionalism and civil discord as distrust grows.

His most controversial act—brokering a pact to trade advanced Revisions technology for a select group’s return to 2017—is widely viewed as self-serving. The deal triggers his imprisonment during a police takeover, though subsequent defense-team losses prompt loyalists to seek his reinstatement.

Muta’s leadership, defined by cowardice and opportunism, sacrifices civilian safety to shield his interests. Denying the Revisions’ aggression despite mounting evidence, he heightens dangers for Shibuya’s populace while eroding unity against external threats. His clash with Kuroiwa culminates in the chief’s death, destabilizing governance through a power vacuum.

These choices frame Muta as a figure of moral compromise, embodying themes of political survivalism. His trajectory underscores the repercussions of self-interest in crises, catalyzing division rather than solidarity as Shibuya faces collapse.