I like how Katarina actually has a personality, such as being a tomboy and that she's reasonably dense.
Though it would be nice if we explored the world of Fortune Lover more, like..
Exploring the capabilities and limitations of Magic, the different cultures of the wold, and perhaps the other character's personal goals that don't rveolve around Katarina?
Though this is quite lighthearted so yeah. Looking at certain aspects of the characters/story in a different perspective makes you realize how dark it can be at times but then again they look at it at a lighthearted manner.