The End Has Just Begun, and the Counterattack System Is Here?

A sudden outbreak of zombie viruses and monsters raging everywhere. Mu Chen was at a loss. Fortunately, he has awakened [Doomsday Counterattack System] ... [Thirty years old, you are confused, looking at the powerful chosen ones around you, you are full of envy] [It's just your mediocre talent that makes you waste your time among ordinary people] Do you want to become stronger and superior to everyone? [Come and start the "Doomsday Counterattack System"! ..... "Not a buddy?" "Just after the end of the world, the counterattack system came?"