Armed with the Black Moonlight Script, I Help the Cursed Prince Claim the Throne

【Transmigrate into a Book + Love After Marriage + Concubine's Daughter Marries in Her Sister's Place】 One day, I transmigrated into a book and was married off in place of the legitimate daughter, becoming the wife of a prince said to bring death to his wives. His father ignored him, his mother never loved him, and his brothers all wanted him dead. He asked, "Yingying, will you stay by my side forever?" He risked his life to shield me from blades and swords, then smiled and told me, "Don't be afraid. I'm here." He vowed to spend his life with me and promised he would never betray me. I believed him, so I stayed. But one day, he became the supreme ruler of the empire, standing in a place revered by all. He held the legitimate younger sister who was supposed to marry him in his arms, along with the enemy who had tried to kill me several times. He looked at me with cold detachment. He said, "Weren't all those times you tried to kill yourself just a ploy to get my attention?" He said, "Yingying, kneel at my feet. As long as you apologize to Mingyue, you can still be my empress." I looked up at him. Suddenly, I laughed until tears filled my eyes. I was still the Yingying he called me. But he was no longer Yan Chengrui, the man who had risked his life to save me...