The Abandoned Daughter Is Crazy: Evil King, Please Respect Yourself

When he was an agent, he was used as a test subject. In order to take revenge, he killed all the so-called scientists. Knowing that he was doomed, he committed suicide with a gun! As the legitimate daughter of the royal family and the prince's fiancée, well, her status sounds very noble, but in reality, she was thrown into a snake den and disfigured, which was like a narrow escape... However, the wedding date has been set, and I thought I would be able to escape the hardships of the palace. I never thought that on the wedding day, I would be knocked unconscious and then replace my sister as a concubine, while my sister would take the opportunity to become the crown princess! She vowed not to disturb their marriage and never give up!