The Forgotten Demon {Gravity Falls AU}

This is an Gravity Falls AU that I created! Please accept any differences in the story and world.
------------

Mason always had nightmares.

There was always an eye. Always a voice. Always the same blue flames.

And it only got worse when he got sent to Gravity Falls with his sister, Mabel.

------------
- Probably going to change title later on!
-Definitely going to change cover, if I can figure out how to digitally draw stuff in a semi-decent format.