Behind the Scenes: I Created the Monster Sequence!

[Behind the scenes + no heroine + group portrait + fun person + invincible article] In the peaceful city, monsters appear one after another. They can be called extraordinary beings, supernatural beings, or serial objects. No one knows where they come from, or even that they were once humans. Why have all the extraordinary things that once existed disappeared? This is an ordinary person named Wang Fan. After obtaining the system, he gradually uncovered the puzzle and carried out a series of experiments...