Who on Earth Is the Villain?!

When Ye Lanxi wakes up, she discovers she's transmigrated into a male-oriented novel about a domineering hero and his harem, as the final villainous boss who shares her name. In the original story, the boss and the hero are fellow disciples, but because she falls short of the hero in every way, she grows resentful and goes down the wrong path. In the end, she falls to darkness and is run through the heart by the hero's sword. Thinking of her eventual fate, Ye Lanxi resolutely shakes her head and decides to save herself. Rather than be a good person, do good deeds, and become the hero's lackey, Ye Lanxi chooses to... use her knowledge of the future to steal the hero's opportunities, torment him in body and mind, wear down his temper, and finally plunge a sword into his chest, forging her own path as the main character. But she clearly followed the original plot and stole the spirit-cleansing pill from the hero. So why did he tell her it was a spirit-nurturing pill after she swallowed it? And why has she been running a fever and unable to sleep all night ever since? Hero: "Dual cultivation with me will cure this fever." Ye Lanxi: "Really?" Hero: "Really!" Ye Lanxi: "I don't believe you!" But as the sleepless nights grow harder to endure, she has no choice but to ask the hero for help... Ye Lanxi: "Don't think dual cultivating with me will make me treat you any better!" Hero: "Mm." Ye Lanxi: "But if you put in more effort tonight, I might consider treating you a little better." Hero: "Mm." Ye Lanxi: "Then come early tonight!" Hero: "Mm." Later, Ye Lanxi gets pregnant, and the now-darkened hero keeps her locked in his arms. She doesn't dare act up anymore... Hero: "Twins on the first try. Was I hardworking enough?" Ye Lanxi: "Wah..." Hero: "After this one's born, shall we have another?" Ye Lanxi: "Wah..." Hero: "Why aren't you saying anything? Am I not treating you well enough, or am I not putting in enough effort?" Ye Lanxi: "Wah, wah..." #Damn it! Wasn't I supposed to be the villain?!# Theme: Stand strong on your own