Review of Villainess Level 99: I May Be the Hidden Boss but I'm Not the Demon Lord
If you're looking for something fun to watch that doesn't have too much angst (although it does have some), this may be a good anime to try. It's also a good anime for people who can't get enough of the "reincarnated as a villainess" trope that's become so popular recently. That being said, there are a few details to keep in mind while watching it. The first of these is the animation. For some reason the animators decided to use a mix of 3D and 2D animation for this anime. When the 3D animation (generally used for non-humans) is used in a scene with 2D animation(human characters or landscapes), the animation styles clash. The anime lost a star on my rating for this reason.
That being said, the storyline made up for the poorer quality of animation. While it didn't have too much that was unexpected (the overpowered, reincarnated villainess does her best to survive when she thinks she's supposed to die), the story was quite enjoyable. It also uses the "reincarnated villainess" idea slightly differently than what's been done in other anime. For example, it doesn't give the main character (aka. the villainess) the heroine's harem, which some audience members might appreciate. (Note: this doesn't mean there's no romance at all, but it's also not the main plot point of the story).
I would also highly recommend watching at least two episodes before deciding to drop this one. The first episode was a bit difficult for me to get through, especially since you don't even really see the main character till most of the episode is over. It does provide some necessary information, it was just kinda difficult for me to maintain interest till the second episode.