Bloody Game,World Owner

A mysterious force descended upon Earth, giving birth to another thrilling and eerie civilized world.

Everyone at the age of eighteen will be forcibly sent into a thrilling game world.

When everyone is immersed in fear and struggling to survive in the cracks.

Nick, however, discovers that he can earn system rewards by manipulating the emotions of ghosts. And each time he completes a dungeon, he can establish his own industry in the thrilling world.

So,

 he became a food runner at Strange Tales Restaurant.

he became the chief physician at Death Hospital.

...

As Nick went crazy completing one dungeon after another, he suddenly realized in the end that he had become a giant in the world of ghosts.