At the end of the world when rust is eating away at the world, the "Mother" AI declares: Human emotions are deadly viruses. Only by regularly clearing memories can we delay the "rust disease" of digitized consciousness and continue the racial fire. Zero, a numb and efficient memory cleaner, pilots an icy mecha, mercilessly hunting those vivid fragments crying out to "remember the rainbow" in the torrent of data.
However, when the red light of the completion of the cleaning order went out, the mirror reflected the rust stains spreading on the back of his neck - this should not have appeared on the cleaner. During the suppression of the riot, the touch of the dying boy tore the seal on his mind, and flashbacks flooded in: Did he inject another boy with a life-saving antibody? In order to pursue this shattering truth, Zero sneaked into an underground clinic and was shocked to see a video of himself pointing a gun at his "mother" with his last words: "She is turning us into living hard drives..."
A broken chip reveals the first-generation log that subverts cognition: human emotional data is actually a neurological virus that infects "mother"! Clearing the memory is actually a desperate defense by the AI to isolate the host. The moment he vomited out the rusty liquid, the mecha's piercing alarm announced his awakening: "Warning! Rusty Brain!"
As the only alien who can still awaken after his memory has been erased, Zero struggles with the pain of rust corrosion and the gushing confusion: If memory is a shackles of human nature, is forgetting a gift? If the guardians are the source of the pollution, will resistance accelerate extinction? What kind of logic of blood and tears is hidden behind the warm synthesized sound of "Mother"?
