Dream Demon's Successor(Crossover Harem X Male Bill Cipher Reader)

16 year old Y/n Branwen didn't have the best childhood. After Taiyang died due to a cruel prank by Ruby and Yang, Y/n was abused and neglected from a young age to the age of 16, in which he was sent to Union Academy along with Ruby and Yang. Sadly for Y/n, those two bitches lied to all the female population of the school and turned them all against him, resulting in him getting bullied and beaten regularly. One day on the cliff where he did his initiation, he was confronted by his so-called family and was punched off the cliff by the blonde bimbo and fell to his death. However, before he could die, he encountered the one and only Bill Cipher and was asked to become his successor. Y/n agreed and shook his hand. After that, He awoke in the infirmary with no injuries present on him and with his so-called family. After rejecting them and those who were in on the bullying, Y/n decides to leave under the guise that he was transferring to another academy, when in reality he's going to train his newfound powers. What happens when both sides caught wind of the "Dream Demon"? Find out in "Dream Demon's Successor"!!!

(A/n: I do not own Gravity Falls, nor do I own RWBY, MHA, and any anime. They belong to their respective owners!!!)