The day Pei Yu was bound to the System, the Main God told him that his sins were grave. He would have to travel to different small worlds, play the villain, atone for his sins, and then die.
So he became a sinister tyrant, an evil master, and a mad scientist.
He humiliated the protagonists according to the script, drank poison and fell off a cliff according to the script, then faked his death and ran away according to the script.
But he forgot to account for one thing:
The protagonist who was supposed to kill him for revenge, Fu Zirong, would turn red-eyed and tear the whole world apart after his "death."
The imperial palace burned to ashes. The sect was slaughtered until not a blade of grass remained. Half a city was reduced to ruins.
Hidden in the shadows, Pei Yu watched the obsessive man clutch his "ashes" and say, word by word, "Pei Yu, wherever you are, I'll turn it into hell until you come out."
Only later did Pei Yu learn that Fu Zirong wasn't a protagonist from some small world.
He was the Main God's foremost enforcer, someone who would cross three thousand worlds to find him, even with fragments of his soul scattered everywhere.
Theme: A deranged villain fakes his death and runs, while an obsessive protagonist blows up the world to chase his beloved