Although the romance/harem side of the show doesn't really progress, if you came for the comedy, you are here for a ride.
The story about our otaku main protagonist in school, who one day awakes as a small Katarina Claes, the villainess of a dating game, and decides to avoid all her doom flags, quickly becomes a show about "How dense can Bakarina possibly be?". That is, most of the comedy comes out of our protagonist spending so much of her time monologuing, which is represented by a council of Katarinas arguing in her head, that she doesn't even notice how much all of her friends, and I really mean "all of them", want to be in a romance with her.
With that said, you shouldn't expect many school elements nor a well developed romance. Mostly because of the comedy, but don't get me wrong, even though the comedy overshadows most of the other characteristics of this show, it's really fun and entertaining to watch both her childhood and her teens as the show progresses.
About the characters, even without much of a depth added to them, I would say that they do their job pretty well.
It's pretty simple, the characters close to Katarina have a different personality from one another, which leads them to different kinds of approach towards our main heroine, being it romantic or not, as it's the case for Bakarina's maid, for example. You might find them a bit cliche, but, as I said, if you came for the comedy, there's no need to worry about it.
All things considered, it's a really fun and entertaining comedy, with character fitting in their roles to the genre, but there isn't anything that stands out.
Yet, if you don't know whether to watch it or not, I'd still encourage you to watch this anime. I hope this review helped you. ^^
