Not a lot of development, it just follows the same formula over and over and over. Its not TERRIBLE but its not good either. It takes a long damn time for the characters to change even a little. More fanservice than plot. Nagatoro and Gal Gohan are much better alternatives.
Very little world building, just a long chain of events one after the other. Very fast paced. Even in the way its written there is room for more showing rather than telling, but very little is done. When you don't have a well-structured setting, what happens next could come out of nowhere at the...