Monsters and Demons (Bill x Reader)

The last time you visited the mysterious Gravity Falls was when you were five, and now you're fifteen. Ten years you haven't been to Gravity Falls but you haven't forgotten about it. Your cousin, Wendy, informs you of all that has been happening. Last summer, she told you how two kids, named Dipper and Mabel, saved Gravity Falls from a dream demon. You are curious to know if this dream demon is really dead or alive? You believe your questions will soon be answered when your parents tell you that they are taking a trip back to Gravity Falls. DISCLAIMER: I do not own Gravity Falls!