This is my review from LNW and since its down I'm gonna paste it here 

I love this book the world building is so good. The slow burn is also good. It is mostly like this for the character growth and the relationship between he both of them to form. You wont even notice the yoai parts until you get to a certain part. This novel deserves to be high in ranking due to its great plot and characters. The best part of this novel in my option is the world building as well as the relationships between all the characters.