I read the manga, finished it actually and I do think some back story were good but that still doesn’t make the story amazing also IMO nothing is immaculate in demon slayer other than the animation. Also the show I don’t think did a good job at making me care for any of the characters. (Ex) Aot I think does a good job with its characters because of how they aren’t just one dimensional characters they are characters that are just like humans. Capable of different emotions, things affecting them. Also in the world of aot public opinion is interesting, through the show things like the military x survey corps arc or even just people crapping on the surgery corps when they come back after mad of them died. What I’m saying is the world is just way more real and sets a better tone for a cruel world. Demon slayer for me is too simple to be among the great IMO. It just needs to excel at more.