The Unfilial Son Who Will Kill Me Is Seducing Me

Charlotte wakes up one day to find herself transmigrated into a novel she wrote herself. But she had already brainwashed the male protagonist right before!
To avoid her destined death and find a way back to her original world, Charlotte voluntarily exiles herself to the Lucenia Grand Duchy, known as the Black Magician's Grave.

"Hello, witch. Welcome to the grave."

There, she meets Grand Duke Caius Lucenia, a black magician hater who is known in the novel as the ultimate ungrateful child...?

Original Webtoon:
KakaoPage, Daum