Zero.

Summary

In a world where one individual seized three-quarters of the territory, a discussion unfolds between Zero and Yang Chan about sacrifice and choice. Yang Chan challenges Zero's perspective on the value of individual lives versus the greater good, using a thought experiment about a train dilemma. Zero admits he would save five lives at the cost of one, but Yang Chan argues that sacrificing the one for the five is morally complex, especially if the one can save themselves. The conversation escalates into a confrontation about the motivations behind their actions, with Yang Chan asserting that self-interest drives all decisions, including those of the Space and Time Bureau. Zero, confronted with Yang Chan's defiance, realizes he underestimated her, but she mysteriously disappears before he can act.

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