Sharing the Stage with the Female Lead (Transmigrate into a Book)

[Do not read! This is an abandoned project!!] Yu Yanshu transmigrated into a book, and not just any book: the script of the TV drama where she'd made her leading-role debut? If transmigrating into the story wasn't enough, who was that white lotus who looked exactly like her? She'd thought the heroine was annoying when she read the script. In real life... 1. "Sister, since you look exactly like me, take my place and enjoy the glory of being the Crown Princess Consort." Enjoy what glory? The Crown Prince was sickly, coughing every three days and bedridden every five. Marrying him would mean becoming his unpaid caretaker. Later... Crown Prince Li Yun: "Yanshu, I'm going to practice martial arts! I've left my laundry to one side. I'll take care of it when I get back." [Pat on the head :/] 2. "It wasn't Sister's idea. I truly don't love you anymore. It has nothing to do with anyone else." Yu Yanshu: "It was my idea!" Scholar Yan Ci: "What an interesting young lady." 3. "I'm truly sorry for letting you misunderstand all these years." General Xi Rong: "It's fine. Yanshu already explained the truth to me." 4. "Sister, you suffered in my place for so many years. Now that His Majesty has ascended the throne, the harem is in turmoil. If you don't like these power struggles, I'll take your place." Yu Yanshu turned to look at the person in imperial robes. "She says your harem is in turmoil." "I'll disband it right away!" The destined couple: an insidious, scheming, ruthless, and deeply calculating yandere who is only slightly shameless, slightly flirtatious, and slightly mischievous with the heroine, VS a calm, easygoing daughter of the Marquis's legitimate line who only wants to find what is right but keeps getting flirted with. They only ever love each other, from beginning to end. Happy ending. Theme: Growth