I Issue Systems, So It's Perfectly Reasonable for You to Work for Me, Right?

The world of swords and magic, the post-apocalyptic wasteland, the world of gods and demons, the interstellar world... From countless worlds, a random selection is made, and incidentally, a laborer... a 'chosen one' is selected and given a system! As the golden finger old grandpa (crossed out) boss behind all the chosen ones!The deceased Tang Ziheng found himself existing in the void and acquired a system. To become stronger and to revive, he embarked on a path where all the myriad worlds would work for him.