Yandere Little Sister X Male Reader

You had it all made. Okay grades , great friends, a loving and caring sweet little sister. What more could a guy want. Well I don't know how about getting out alive. Everything you thought to be true is a lie. Your little sister has been watching you your every move. No matter where you are she's been watching you stalking you ,ready to kill. Play your cards right you might just make it out alive.

" don't worry,onii- sama once they're gone it'll just be you and me together 4 ever, for all eternity~fuf"