Mysterious Ways {Bill Cipher x Reader}

Demon, a creature that is said to hold the power to possess and torment mortal lives.
They are a mystery, a debate; are they real or are they fake?
The mystery was solved in a small town called Gravity Falls where a demon tried to take over the town and its inhabitants, if it weren't for the brave Pines family and the efforts of their friends, the town and whole world would be in complete chaos.
Yes, everyone remembers that day as if it was only yesterday they had to hide and flee in the town they live in.
Especially a certain girl who is moving back five years later after the events..of Weirdmageddon.

Hello, before you start allow me to clear up any answer you may have for this story.
-bill will be a human LATER ,
-Mabel and Dipper pines are 18, reader is 23,
-No this is not gender neutral I apologize if you really want it neutral I will edit it after I am finished with the story.
- (Y/N) = your full name
-(F/N) = first name
-(L/N)= last name
- (H/C) =hair colour
-(E/C)= eye colour

Please give me feedback on this so I know if it's worth continuing or not and please feel free to correct my grammar if there's a mistake, Enjoy!

Ps: artwork belongs to rightful artists and has 100% credit towards them for drawing it, Thankyou.