Revenge Pact (Futa!Demon x Fem!Reader)

Have you ever felt like your life was just an endless, downward spiral because a certain person? Have you ever hated someone so much that wished for their death? Been tormented by someone so cruel and spiteful, that you'd do anything to get them out of your life?...Or at least make them suffer a fate so horrible that they'll regret the day they crossed you?

Well, that's exactly how Y/n feels after the death of her mother. Y/n's best friend Chloe, who was once very close to Y/n, betrayed and abandoned her as well as turned everyone Y/n knew against her. Chloe then made it her mission to make Y/n's life hell by bullying her former friend with a cruel lack of empathy. To make matters worse Y/n's father is getting remarried to an awful woman by the name of Heather, who hates Y/n with a passion and is only after her father's money. Y/n's life has slowly gotten worse over the years because of these two and would do anything to pay them back their cruelty ten fold...So, she made a deal with a being she didn't know or understand...But that didn't matter, all that mattered to Y/n was that she get her revenge....NO. MATTER. WHAT.