Null K is too much for me. Although categorized as sci-fi, the scales go unadjusted: there is tiny amount science (cryo-cocoons for preserving human bodies) and a lot of fiction. I would rather categorize this as psy-fi, or psychologic fiction.

I like how the main character evolves, but that's basically all that came through to me. The rest remains obscure and possibly too deep. Null K isn't entertaining, it forces me to use some parts of the brain that I rarely have used.