: With Doraemon's help, Nobita collects and assembles the parts in a "Mirror World" (a parallel, uninhabited Earth), naming the giant robot Zanda Claus .

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As Lilulu completes the reprogramming, she knows it will erase the current timeline—and herself. In the Mirror World, just as the robot army is about to crush Nobita and his friends, the enemy soldiers begin to glow and vanish into particles of light.

This setup serves as a crucial narrative device. By having the children build and bond with Zanda Claus (later named Pippo) before revealing his origins, the film forces the audience to question the definition of life. Is Pippo merely a collection of steel and circuits, or is he a living being deserving of rights? This ethical dilemma elevates the film from a simple adventure to a thoughtful sci-fi drama.