I'm not the one who wants to hurt you Billdip fanfic. [BOOK 1]

Dipper is 16 and suffers from paranoia and schizophrenia. He takes medication for for both of them and for anxiety. Everyone in the shack slowly starts to forget about him. What happens when Dipper becomes friends with his old enemy Bill Cipher? But doesn't know it yet? And bill helps him getting out of his problems a...