Saving the Villain After Transmigration

Dr. Yue Wuyou, a modern medical expert, accidentally transmigrates into an ancient romance novel she was reading. Instead of becoming the beloved female lead, she becomes a cannon fodder assassin. Upon arrival, she's ordered by Prince Shang Zhiyu to kill the novel's main villain - Ye Weichi, a fake eunuch. To survive, she poisons him but then remembers that according to the plot, this cannon fodder character fails repeatedly and dies tragically. To change her fate, Yue Wuyou decides to alter the story. When Ye Weichi finds her, he doesn't kill her but makes her his concubine. Prince Shang threatens her brother's life to force her to stay close to Ye Weichi and assassinate him again. Caught between protecting her brother and changing the plot, she maneuvers between both men. Gradually, Ye Weichi develops feelings for her. Just as they're about to find happiness together, the original female lead appears...