Kafka on the shore

Kafka On the Shore. My first Haruki Murakami Book.

Not until I finished the book, I knew it was of magical realism, fantasy fiction genre.
Finishing this book left me with a lot of questions. A lot.

First things first. 
what is it about the incident that caused Nakata to be special. Is there any link between the incident and Miss Saeki?

How are Nakata and Ms.Saeki related?

Convinced by Kafka and Oedipus curse. Kafka's whole story is understandable but, the relations still seem vague. 
There can't be rational explanations in a magical act. Agreed but, acts without any explanations are too much to take in. 
This book has too many loose ends which can together make another sequel.  
Well written but, the purpose of writing is vague. There's a lot of philosophy but, why characters behave the way they behave is unknown in the book. 

After finishing this book, read a bit about Haruki Murakami. Intrigued by his writing process.
His writing on running seems to be worth a read.  If there's anything I'd like to read of Murakami. I'd pick up his memoirs from now. 
One of his lines I quote are

“If you only read the books that everyone else is reading, you can only think what everyone else is thinking.”