Chapter 1:

Y/N is a demon who inhabited Gravity Falls. She had been waiting for years to get her hands on the infamous dream demon named Bill Cipher. The demon who had ruined her life years ago. Her plan finally came to a start when a young girl named Raven Nightingale set foot in the small town. The demon decides to make a small deal with the orphan girl, Y/N would be her guardian for the rest of her life if she helps her lure Cipher out. Not such a bad deal right? But what does Y/N have in store for her in the future? Will she finally get her revenge or will she get something else coming?