Nightverse Falls(AU)

Why was there the feeling of being watched all the time? Why sometimes did he have to be so paranoid? Why did she have insecurities that weren't even real? Why did the nightmares visit?

While visiting Gravity Falls for the summer, Dipper and Mabel experience something they never had to worry about before back in California. Nightmares.

Dipper of course had some every few once in a while, as well as Mabel, but never like this. Whenever someone worried too much, or felt that negative energy or let things get to them that likely would never happen, something started to form. Dipper felt the slightest queasy when he saw a black, gooey orb floating around and following him. He had no idea what it was, or where it came from, but one thing was for sure...it wasn't good.

After more nightmares, after more negative feelings, that gooey orb became a monstrosity. One that he couldn't figure out how to get rid of. He didn't tell Mabel because he didn't want her to worry, but he had no idea that just about everyone around him was experiencing the same problem.

AU by @DisneyFaller
Collab project with @DisneyFaller and @FallerFurever_Meow