Lost (Billdip)
You_cannot_stop_me
Bill reterns to Gravity Falls (in his human form so nobody knows him) after three years to finially complete his original intent, now with a plan far better than before. He befriends older Dipper and Mabel and starts working at the Mystery Shack, but when his harmless plans go wrong, can he save Gravity Falls?
(Art is not mine)(I made up a lot of this so it doesn't really relate to the actual show)
(this is my first story, I am sorry for poor quality)