i can’t remember clearly but there were two boys, I’m assuming they were twins,, maybe siblings? I think one had bluish skin and the other was bitch black, somewhere in the movie an old lady dies and her blood is used to write a message on the wall. At the end I think the two boys fight and the good blue one thinks he won but the black twin crawls out of the ground and kills the good one? Idk but if this sounds familiar help me out please and thank you