It's all very well-done and the music is great and IU is wonderful but, IDK... I only made it to episode 6.
It's very disjointed. Both in the narrative sense of being little vignettes and I am not quite sure where things are going half the time. (But in a messy xianxia kind of way, not an intriguing mystery kind of way.) But also content-wise. It can' seem to make up it's mind how bad things really are.
Or something...Maybe I'll try again someday.