Read manga The Villainess’s 18 Year Old Attack on treemanga
OMG a reverse isekai??!
Our MC is a villainess in a webtoon and she was suddenly reincarnated as an 18 year old webtoon writer in the modern world. Her character as the villainess in the webtoon will meet a tragic death, but she has now the chance to change the ending after getting reincarnated as a webtoon writer.