It seems to abruptly end which disappointed me as I was enjoying the book more as it progressed. I liken it to seeing how far the rabbit hole goes, only for it to end after a foot or so.
One facet of the book that I did like and thought was treated well was the handling, explanation, and characterisation of the Japanese psyche. The importance of honour, standing, and respect. Reading it did make me feel that PKD had studied and understood the culture.