I'm a fan, having read 16 books of Julie Kagawa's. I have high hopes.
It was good but not great.
I feel like my lack of knowledge with Japanese culture and folklore may have contributed to me not loving it. I literally had zero knowledge.
At the beginning of the story I was even slightly confused, and wondered if it might be a bad read. I'm glad I kept going and am glad I did. At the end of the story I was left wanting to read book 2, Soul of the Sword. I was pulled into this story about a kitsune on a quest, who meets a samurai and other characters.
I also k=now want to know more about Japanese culture in general.
I just want to say to Julie Kagawa fans; don't go into this read expecting too much if you also have a lack of knowledge in that culture, (actually; or not). Fans often have their hopes too high and compare it to their favorite series, which is unfair when it's so different. Have an open mind like I did, and you will end up enjoying it.