At the End of the Human Race, I Transform into a Behind-The-Scenes Guard to Guard the World

The human race started a wave of evolution, but they never wanted to trigger the end of the human race! The demon plane invades and the human race collapses! Chen Yuan, who possesses top talent, had a glimpse of the human race's demise ten years later. He used the power of the simulator to simulate life again and again, turning the tide and becoming the human race's light of hope! Many years later, Chen Yuan discovered that the road to human evolution was just the starting point... Countless years later, Chen Yuan stands at the top of the universe! [Simulator text, behind-the-scenes flow] [Newbie's work, I hope you'll forgive me if it's not well written.