The male protagonist wakes up and finds that the sky has fallen. The whole world is filled with monsters and monsters, and there is an endless supply of them. He wants to escape but finds that there is nowhere to go. The school gate is full of monsters. Just when he wants to commit suicide, a man who claims to be the system comes to him. With the help of the system, he kills the demons and restores peace to the world. But why did the system choose him? Why didn't he choose someone else but the male protagonist? What is his relationship with this world? Is it a fantasy world or a real one? Or is the hero himself already dead?
Intention: None