☆Humane☆ YANDERE MUZAN X CHILD SISTER READER (Kimetsu No Yaiba)
Child Sister Reader! Muzan is extremely possessive and obsessive over you. He turned you into a demon to make sure you two will be with each other for eternity. "You make me feel human."-Kibutsuji Muzan. Who knew Muzan would like the human emotions you make him feel?