I'm Fighting the Protagonist

The protagonist Li Si is an employee of the Scum Department of the Space-Time Administration, and is usually responsible for monitoring and sanctioning cross-border criminals. In an accident, he was involved in a huge space-time turbulence. He was charged with a system task and had to go to multiple other worlds to complete tasks before he could return. And his mission is to suppress the protagonist? World 1: In the world of martial arts, the protagonist of Destiny wants to seize the position of the leader of the martial arts alliance. The protagonist transforms into a knight-errant and defeats the protagonist of Destiny, causing him to fall short of his achievements. World 2: Magical world, the destined hero wants to save the princess, the protagonist transforms into a dragon and defeats it. World 3: In the ancient world, the protagonist is destined to ascend the throne and proclaim himself emperor. The protagonist transforms into a powerful minister to pull him down. World 4: In the modern world, the destined idol wants to become a superstar, and the protagonist turns into an agent to make him withdraw sadly. ... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.