Apocalypse's Powerful Minister: from a Small Banner Official to the Emperor Behind the Scenes

A modern criminal policeman traveled through the Apocalypse and became a bannerman of the Imperial Guard. When he woke up, he was involved in a murder case involving his boss. In order to clear the suspicion and save his life, he relied on many years of criminal investigation experience to peel off the cocoons, but found that behind the truth, there was a power transaction sweeping through the factory guard. When everyone wants to turn him into an outcast, he can only overturn the chess game and become the chess player himself.