The Runesmith - Chapter 24 Little Goblin Slayer to the rescue.

“Any who don the title of 'king' or anything of the sort in my presence is nothing more than an ignorant fool. This is my land and I shall be reclaiming it soon. I am Cacophony, the Vampire Empress!”As those words left her lips, every cell in my body reacted. It was unreal—no, it was otherworldly. Her beauty, her power, and her overwhelming arrogance. It might've been then that I realized that my normal life had ended.How did it come to this?Ah, it was curiosity. Yes, a deathly curiosity brought me to that graveyard that day.It was there that I stumbled upon her coffin. I had absolutely no clue what I was doing then, and even now I have no idea what possessed me to touch it—that single moment changed the course of history for the entire world. I found myself delving into a completely unknown world.Should I regret it? Maybe. But the truth is, I don't.Exploring the world’s hidden secrets, forging unexpected bonds, and living alongside the revived empress—it’s exciting.“Even if it's wrong, I think I'm going to enjoy every moment of it.”

e Xuan transmigrated into a novel world only to discover he is the novel’s villain?

Moreover, the heroine of this world was aware of the future plot and was preparing to kill him?

Danger-!

Luckily, he awakened a system that allowed the heroine to see the plot.

“In order to save you… it didn’t matter if I was possessed by a devil!”

Heroine: He turned into the devil to save me?

“Why, you won’t listen to my explanation? Being wronged by you is like a sword piercing my heart, it’s so cold and painful.”

Heroine: What, he was wronged?

“Your sword hurt me so deeply… This life, I will not fall in love with you again.”

The heroine cried her heart out: No-!!!

“Please don’t r*pe me. This life, I would rather betray the heavens than betray you!!!!

This is the story of a person who transmigrated into a world with a radically different worldview.

MC (female protagonist) dies in a plane crash and wakes up in the body of a beautiful but corrupt and lascivious prime minister in ancient times, Zhang Qinglian. As circumstances decree, he (she) cannot reveal that the original owner’s soul is gone else calamity might occur. So he (she) decides to walk a righteous path, determined to help the lovely but simple little emperor rule the country. Not backing down after facing torture, not losing courage, destroying rebellions and facing off with scheming princes.

- Description from Novelupdates