I will get my biggest flaw with Parallel World Pharmacy out of the way first, that being that the show's ending is slightly rushed. I'm not asking for a 10 season run or anything, but another season or two would've been justified due to the vast and interesting world that had been set up in the 12 episodes that we did get. So many powers, countries, ideas, characters, and more were merely just mentioned and it would've been really cool to learn more about those things. Other than that this show took me by surprise, as it starts out pretty basic. By episode 7 I was enjoying the show, but it was nothing too special. Not to exaggerate too much, but episode 8 was one of the greatest episodes of a TV show I have seen in a long time, and from there it was consistently great. Episode 8 made a unique choice to follow someone other than the main protagonist, and I really appreciated that as I think it turned the show from a standard isekai anime into a fantasy drama about class hierarchy. There are also a lot of unintentionally funny moments throughout the show, but if anything they just made me like it that much more. If you like isekai anime, I think Parallel World Pharmacy is a good watch.