Under the mean face(Underfell Sans x reader)[COMPLETED]

You had a happy family and never got a big problem, just that you never believed into you. Your parents tried everything to help you but in vain. One day, you decided to stop bothering them. You went to the darkest place of the forest and end your life. At least, that was what you wished. ( I'll skip the moment in the Ruins, so you'll fall into the snowy forest.) (Btw, I do not own the AU or the characters that are present in Undertale/Underfell)

Edit-Some elements of this story might be trigfering and since I litterally have bo idea of how younger thought this was okay, we'll just say that the reader has Stockholm syndrome.