There are quite a few comedy fantasy anime in the vein of The Slayers and, unfortunately, most of them are varying degrees of quite sexist. Even The Slayers has some episodes that really don’t hold up as very good, although it also has some extremely funny episodes and some action scenes that work quite well. There are certain tropes that come through in a number of the series in this vein that, depending on execution, feel a little awkward; lots of cross-dressing, lots of jokes where the punchline is pretty much “man tries to spy on woman and gets punched” and so on. The execution varies for better or worse, but nevertheless it seems this sort of adolescent humour is a recurring theme and it’s wholly understandable that that might not appeal to people so much. Konosuba goes perhaps even further by having a masochist-fetish defender and various other more direct sex jokes.