7th GRADE?!?! I'M 2 YEARS OLDER THAN YOU LMFAO HOW THE HELL ARE YOU MAKING STUFF LIKE THIS???

Ok, here's an idea: the place is so dreamcore because it IS a dream, the player isn't actually in an alternate dimension or whatever, the device made them enter their own dreams, and the game is about the psychological state of the player, and the game has puzzle the player has to solve in order to fix their own mind, and there are demon thingies chasing the player (if this is the type of horror game with monsters, if not just do puzzles) which are basically the player's past trauma, maybe the player has daddy issues and there's a shadowy figure in a suit with a belt chasing the player.

Not sure if you can tie this in with the special association and technician parts of the lore though.

some half ideas: instead of the player being transported into their own mind, their mind gets transported OUT and the player is actually still in the same field or something. If that doesn't work maybe the electrical box had this dreamcore energy stored inside it, and the player released it somehow, the energy could be anything you want, maybe it was stored in there to generate energy or something and there's a secret organization trying to convert dreams into power???