After Reincarnating as Cannon Fodder, I Turned the Prince's Manor Upside Down

The moment she opened her eyes, she had become an illegitimate daughter who had been cast out by her husband and abandoned in a desolate courtyard to await death. Her original self had been gentle and timid. Her legitimate elder sister stole her marriage, her stepmother forced her to drink poison that made her mute, and her own father drove her from the family home. The System said: Stay alive, and you win. She smiled. The next day, her stepmother's account books were delivered to the Court of Judicial Review. On the third day, the Crown Prince's secret letter appeared by her pillow. Half a month later, she stood in the Golden Hall, gripping a blade with its tip pressed to the Crown Prince's throat. The court officials knelt all around her. The emperor asked: Who are you, really? She wiped the blood from the blade. Someone who no longer wants to live on her knees.