The first arc of the story lasts 2 volumes, and it hinges on a misunderstanding. This already makes it pretty frustrating to read, but it is exarcebated by the fact that it is completely 'fabricated' and has to jump through hoops and loops to justify itself. In particular, both parties seemingly attempt to obfuscate and twist information in order to make it work, and worst of all, the resolution of the arc pretty much just the parties saying "oops, sorry". Imagine there's a group some distance away of 10 black guys and 1 white guy and you're told to point out the guy you're looking for, and you go "umm... it's the guy with brown eyes and dark hair". Then when they don't find the guy you're looking for, you're all like "well, there's nothing that could've been done, I don't think he wants people to know he's white". This is the level of storytelling you have to have in the back of your mind while you're reading it.
It is also quite frustrating how the main characters deal with the villains. They do particularly wicked things to the protagonists that more than justify an extreme hatred towards them, or at least some sort of revenge, but the most we get is an "oh boy, they're at it again, oh well". For instance, one such character stalks the 12-year old girl, then attempts to drug and kidnap her and put her in what essentially amounts to forced labor in his house, while at the same time trying to rob her and those around her of their livelihoods, to eliminate all venues of escape.... And everyone pretty much everyone just turns a blind eye or shakes their head, "those nobles~!" with barely any resentment.
Lastly, I feel like most characters are somewhat uncanny. People don't behave or talk in the way actual people do (or at least book-people). Kids talk like adults, adults talk like kids. People are apathetic one moment and compassionate the next. When something happens and there's a 'showdown', all side characters suddenly appear and say their lines as if it were normal, etc.
