The Peerless Prison Concubine

In the harem, she was his beloved concubine with a beautiful smile. On the battlefield, she put on men's clothes and accompanied him through the world. She did all this just to protect herself, but she fell into it unknowingly. However, later, she discovered that she was just a pawn and a handle for him. He used her to cleanly eliminate her family, but left her alone in this world, tortured her with all means, and refused to give her a clean ending. Time passed by, and finally, she discovered that this was a completely different story...