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Undercover in the Nursing Home: The Final Revenge Kill

To avenge his deceased friend, the protagonist goes undercover as a dementia patient in a strictly guarded suburban nursing home—actually the hideout of the criminal syndicate that framed his friend. He secretly teams up with the police to set a trap, navigating tests from foes disguised as kind residents and facing close calls. In the final showdown, he reverses his vulnerable stance, outwits all enemies with meticulous plans, and completes a shocking turnaround.