He and her were childhood sweethearts, and she took off her red clothes and put on armor for him to fight on the battlefield for more than ten years. When she returned from the bloody battle, he greeted her with red makeup, but she was not the one to marry. The world only knows that on that day, she transformed into a demon and had thousands of lives on her hands. Little does she know that she finally meets her love, and her lover has also become a demon.