This was a weird one. 

It certainly was a cleverly constructed story, but the way it was told wasn't really my thing. You get told the most important things at some point, which is why you never really feel like you're discovering something. You can try to put everything together before you're told, of course. I tried to do that in parts, but I can't really dertermine whether I succeeded or not, because at the time I suspected things, I couldn't really tell how obvious they were supposed to come across. 

Other than that, I also wasn't the biggest fan of this mix of third- and first-person narration, it irritated me a bit.
I also never really got invested in the characters, which doesn't help me being awed by a story. Must say though that Áróra is an interesting character and I liked how she isn't afraid to be a successful and unapologetic person, at least about what she does for a living and how she does it. That sure is badass. Still, I didn't grow close to her, maybe because I just didn't like how ingrained this "my older sister is weaker than me, I have to protect her"-thing is within her, even though I get where it's coming from. 

So yeah, sadly not my thing. I'm unsure whether or not I'll continue the series. If I do it'll most likely be something I start whenever I don't know what else to listen to next. 
I can recommend the german audiobook, I liked the narration. I also think the german covers for this series are really pretty.