Tanjiro and you were very good friends, you were also friends with his demon sister, Nezuko. But one night, he heard a lot of weird sounds coming from your room. He gently opened the door, Nezuko next to him, only to find you on the ground, covered in blood. Tears started to run down his cheeks as he immediately crouched down next to you. But you weren't dead. No. You were now a demon...