The apocalypse arrived, plunging the world into chaos. More than ninety percent of humanity turned into zombies, while the rest could only struggle to survive.
But in this chaotic new world, Liu Yu acquired a System. All he had to do was kill monsters to get weapons.
This is hilarious. He can start conquering the apocalypse right away.
Whatever kind of zombie horde comes his way, he just sets up a Gatling gun and mows them down like wheat.