First the bad stuff some people will likely judge harsher than I do is fan service stuff harem bit of a predictable plot.
The good stuff is the world building animation and art style won't blow anyone out of their minds but since it's practically 10 years old it is still good looking. Good chunk of the arcs are really good and serve as character building Probably the highlight will be the dynamic between Bell and Hestia it feels like they really do manage to pull off their close relationship.
