If reality were a game,
Then there will definitely be NPCs and players in this game.
If the player of this game is a being beyond this world,
In order to increase the playability of the game, it is necessary to prevent players from acting arbitrarily in the game.
Then this game will inevitably have an anti-cheating mechanism.
The Ghost Search Bureau is such an organization in the world today.
They are responsible for searching and hunting ghost players in this world.
Concept: Balance between players and NPCs