Mr. Outside, ultimately unmasked as Saizo Ato, masterminds a clandestine contest to catalyze Japan’s renewal. A postwar industrial titan pivotal in the nation’s reconstruction, he adopts his alias through a phonetic twist—his surname “Ato” echoing the English “outside” in Japanese. Concealed as a taxi driver, he scouts candidates by posing a decisive query during rides: how they would deploy 10 billion yen to transform the country.

Recruited individuals, dubbed Seleção, receive encrypted phones linked to the AI Juiz, unlocking immense funds and infrastructure. Yet the game demands rigor: squandering resources or breaching protocols triggers elimination by enforcers called Supporters. Saizo’s scheme merges idealism with calculated strategy, spurring societal evolution through competing visions while he remains the invisible architect.

Rooted in his postwar legacy, Saizo champions individual agency to redefine Japan’s trajectory. He assesses candidates through hypotheticals, though Takizawa—chosen impulsively during a casual exchange—defies this pattern. The game concludes with “Paradise Lost,” where Saizo anoints surviving Selección as victors, purges their memories to unshackle them from the game’s toll, and withdraws. Takizawa, exempt from the erasure, later allies with Saizo to pursue their mission beyond the game’s confines.

Guided by four surveilling aides he calls “granddaughters,” Saizo balances aloof oversight with tactical ruthlessness, neutralizing threats with ease. His finale—erasing memories yet permitting Takizawa’s continuity—reflects a layered ethos: societal legacy eclipses personal acclaim, sustaining influence through proxies who inherit his unresolved ambitions.