(No harem + unhappy writing + no invincibility + no routine + no system + no brainlessness, please don't enter if you don't mind)
Cracks appear in human civilization due to the "increase of time entropy". Weird rules from different historical periods seep out from the cracks in time and space, forming "strange eras" that operate independently - the rusty dolls of the Steam Era, the AI rebellion of the Cyber Era, the living sacrifice curse of ancient civilizations... Each era follows unique "pollution rules", and humans will be obliterated once they violate them12.
The protagonist Lin Yuan awakens the "causal retrospection" ability due to a bank robbery, which allows him to reverse time for 5 minutes, at the cost of contaminating the timeline with more complex rules. He was forced to become a "trouble solver", using scientific logic to fight against the rules of metaphysics in the apocalypse of entropy erosion, and solving problems with wisdom.
