I think this is a prime example of ruining a good core concept. Fundamentally the plot is that a group of people who are distrustful of society are forced to fund their own vices through dangerous work that forces a level of trust they are uncomfortable with. This is put to the wayside by episode 3 when they all are more or less friends with some odd hobbies. It takes what could have been an interesting story about how people are forced to trust each other in dangerous situations and how these pruned characters are forced to deal with those feelings of starting to trust again into a generic boilerplate fantasy show.
On that level of genericness, from the large number of clues we are given through the show, we are quickly driven to realize this is not medieval fantasy but in fact, is post-apocalyptic. This could be interesting ascetically but instead, the show insists on keeping the generic anime fantasy look that plagues this genre. There are no people living in the ruins of what once was, there are no towering beams of ancient times becoming dust, instead, it is just an excuse for the show to have idol concerts and cool future swords.
All of this is to say that this show does not think, it just acts on the worst instincts of modern fantasy anime.
