@Artech29 Sorry, I was a bit confused at first. What you comment before is correct. It is a transmigration.
The ML transmigrated into another world, in which he became an employee for the Daydream company. He knows about this world because in his world, this Daydream is there as a modern fantasy, I'm not sure whether it is as a game or novel. As a fan he attended the event of this modern fantasy game/novel ?? n got transmigrated into it.
@Xiexi And inside this world, he became an employee of the Daydream company, n the employee needs to enter an urban legend/ghost story.
In an easy way to understand, he transmigrated into a modern fantasy world n got a job, n his work is to enter a ghost story, you can think is as a holographic universe/game, but dead is real so u need to survive or complete the task.
Hope you can understand what I mean