I felt a very bitter nostalgic feeling at the end of the book; something like I will get never get read something this lucid and heart pounding especially in the latter few chapters. I think this book has very dream like writing in the end and will make you think.
I believe the book in the begining and in mid parts is trivial akin to our daily life i.e. not very interesting and just readable but builds up the savoury moment in conclusion. I think this book is my favourite murakami book and is better than Kafka on the Shore and Norwegeain Woods.
Footnote : You have force yourself to read it and mid parts.