The Traveler- A Gravity Falls Au

You find a journal in the middle of the woods, no title or anything. You open it to the first page and a paper falls out. You pick it up to reveal a whole page covered in writing in blue ink, it reads-

To whoever reads this, the world as you know it is a lie. Heh, just like Bill said, 'Reality is an illusion.' The world you live in is sheltered. Protected by celestial beings commonly called by humanity as 'Angels.' These beings protect the world from the corruption that is the Nightmare Realm. This Dimension is a dangerous and unstable dimension that tries to stabilize itself upon other stable universes and end up destroying them. The most stable and lawful universe just happens to be where earth is located. Funny right? The most oblivious and ignorant universe is the most protected and important.

Anyways, the creatures that live there. Demons as there commonly called, try to escape it, but end up bringing the realm with them. They have tried so hard to get to earth, by tricking the residents to let them through. Me and My great Uncle being on of the many. I have somehow ended up in-between our universe and the nightmare realm. and I'm certain the dream demon known as Bill Cipher is the cause. The Bastard.

I also must ask that you do not trust anyone who hasn't proven their worth. Mist people will think you are crazy or will try to take it from you. And I don't want to find that when I get back and find a bunch of missing people or unsolved murders. So please refrain to show everyone this, only those you trust wholeheartedly. Be careful who you out your trust in....

Oh, and I might as well add a, READ AT YOUR OWN RISK for the fun of it. But seriously, read at the risk of you, your friends, and everyone you hold dear.