Lithium : (I did not read the novel, so this is only a manhwa-based opinion)
Okay so, stay with me on this, but considering its title, I thought it was gonna blow me away. I LOVED the plot twist where the author got revealed, and the entire thing with the author controlling the story, an unique concept if you ask me.
However, when you DO look at the big picture, it really IS a common isekai/reincarnation story, let's be real. We have this flawless MC which reincarnated as the villainess (how shocking) and is now trying to go down the different path, not to mention that she never makes mistakes and somehow always chooses the right path; so she marries this hot desired black haired duke who at first seems icy cold and who loathes her, but soon enough he starts falling for her! Shocker! So she's put against this innocent looking big-eyed blondie who, as it turns out, manipulates everyone (another shocker). And so a billion hardships and false accusations later she gets her happily ever after with the duke. Once again, don't get me wrong, story was amazing, solid 4/5 stars for me, but at the end of the day, it IS like every other reincarnation manhwa just reformatted and a bit more original.
I'm aware that majority of isekai manhwas are bound to go down this cliché path, but I just wish to see more originality, esp. if you specifically name your work "I thought it was a common isekai story", or "Not your typical reincarnation story" as the WEBTOON's title says.