As with her Steel & Stone series, great world building/lore that you can just sink into - but gets explained well and I didn't feel lost. 
 I really enjoyed the Japanese culture and seeing how their shrines worked, it felt like a book in another era but outside the shrine it was still just the 21st century. 
 The plot was engaging, I had a suspicion about The Great Betrayal, but that didn't change the impact of the knowledge when I found out! 
 Light romance. It is not the point of the plot here! (In fact, I don't see how it could work out which troubles me....) 
 Emi is a unique main character, in that I don't think Marie was trying to get us to love her. She's very different from Piper, who is badass and aggressive. She has led a sheltered life and because of that I forgave her for the typical teenage moments. 
 I was very intrigued by the kami, loved how well Yokei were written! 
 Shiro is a great character, definitely a lot hiding behind that mask and I am keen to see what in the next book!