She was the daughter of the former emperor's master, and she was burdened with a blood feud; he was a humiliated prince, and his heart was filled with despair. The sentence at the palace banquet, "Your Highness's mouthful of blood, looks really good when he coughs it up", started this game where the world is at stake. King Huai holds black, and she holds white, fighting on the chessboard of intrigue. When the chess game ended, he realized that he had become her most cherished chess piece.