The Saviour In My Nightmare

My Oc and a friend of mine's oc is gonna be in the story my oc is Lex the killer and my friend's oc bloodless blade are gonna meet not only by them being in the same class but the same nightmare to , in this story they are secretly sisters and the mom didn't tell them the mom name is melody but she's really a creepy pasta name is a nightmarish melody for short nightmare. Lex really doesn't know this nor does blade but they find out but in the night mare some one is following them around and along with some one else .will they find who it is and in their nightmare what are they running from.