Blade of Dream

Blade of Dream is a very good sequel to Age of Ash. Instead of continuing the events from the previous book, it tells the story of different characters during the same time period. There are only a few points where events overlap, so it doesn't give that "ugh, I'm just reading a different flavor of the same story again" feeling that you can get from this approach.

I found it especially interesting that one of the main characters in Blade of Dream was a very marginal character in Age of Ash that one of the narrative characters had dismissed as a silly girl with no real agency (and thus the reader implicitly seeing her that way as well), and seeing the stark contrast here.