get to know the main character

The main character is just a normal teenager that usually keeps to themselves, but day dreams a lot, and one day while their asleep they went to a world and go on an adventure, but everything only happens while their asleep, when they aren't, they have a normal day and such, but as things happen, the main character will slowly get stuck in the other world with the people they are with and have to find a way to escape that world. the people the character is traveling with will be kpop idols, the main characteter has to savethem at least try and help get the idols out the world so the fans in the real world wont be upset.

you'll have to read to find out what happens to our main character in the end.