Why rate it an 8? The answer is very simple this is one of the rare "Villainess Isekai" Manhwas where she's actually a villainess and ACTUALLY stuck to her plans to get revenge AND she got her revenge. Every other Manhwa is just the repeated plot of "she's a good person / she falls in love / someone helps her / she realizes people didn't actually hate her". If you're going to make your MC a Villainess, then the least you can do is give her a backbone. This FL had the best traits for a villainess; beauty, brains, a cruel bitter heart, and a metal spine. HugeBonus point: The Ml wasn't toxic/cold/mean to her from the start but later changed "due to her love". No, they both matched each other's freak pretty well. He never stole the show, the whole show was hers from the beginning to the end. Which is... Let's be honest incredibly rare.
I would have wished the ending of the romance wasn't put together like that, but I didn't read this for the romance. I read it for the revenge plot and that was great.

Red flag + Red flag, main character pairing.