As science fiction, Usurper of the Sun is a good novel. As literature or as an enjoyable novel you really connect with, not-so-much. I had a hard time liking Aki or Raul in this story. For Mark being the motivation behind Aki's drive and humanity, even that was done too methodically to care about.

In any given day, human beings run through a range of emotions from joy to anger. Even as scientists and engineers, logic doesn't usurp ego or emotional investments. While I enjoyed the story and the plot devices of nanotechnology, artificial vs alien intelligence, xenobiology, and social consciousness, the gadgetry got in the way of the humanity. ( )

As science fiction, Usurper of the Sun is a good novel. As literature or as an enjoyable novel you really connect with, not-so-much. I had a hard time liking Aki or Raul in this story. For Mark being the motivation behind Aki's drive and humanity, even that was done too methodically to care about.

In any given day, human beings run through a range of emotions from joy to anger. Even as scientists and engineers, logic doesn't usurp ego or emotional investments. While I enjoyed the story and the plot devices of nanotechnology, artificial vs alien intelligence, xenobiology, and social consciousness, the gadgetry got in the way of the humanity. ( )

Great hard science-fiction ideas--but not enough character development. The first 20% of the book could be skimmed--the blurb says it all and the emotional import of the character development of Shiraishi is practically nonexistent; however, treatment of her character development does get a little better as the story progresses.

Aside: The three parts were originally short stories published in S-F Magazine (https://en.wikipedia.org/wiki/S-F_Magazine, which, in turn, is published by Hayakawa Shobo (by which many Seiun award-winners for Best Foreign Novel are published).

Although a shallow romance, distant POV, and summary instead of scenes make for a rough read, Maxwell's Demon, nanomachines, and non-FTL drive deliver a convincing hard-SF first-contact story. ( )

This has some interesting perspectives on the first contact theme, but as a novel I found it awkward and unbalanced. Most of the book is astronomy-heavy hard sci-fi acted out by characters whose internal and external dialogue are primarily awkward infodumps that are supposed to illustrate their genius-level expertise but just come out sounding like an unbearable freshman philosophy. Also, I found the character development of the lead, Aki, to be inconsistent at best. For example, her internal monologue veers from insistence on objective scientific analysis of all possibilities to the bewildering belief that her assumptions about a situation must be correct because her "intuition" has always guided her correctly previously. Perhaps something was lost in translation from the original, but like other reviewers, I don't get the hype about this. ( )

Reading like "Rendezvous with Rama" filtered through "Blind Sight" by Peter Watts, the emphasis here is on the science and the concepts. This means that while Nojiri has succeeded in keeping to Greg Benford's dictum to "make it weird," the level of characterization feels very old school and I don't mean that in a good way. The exception would be in the character of Aki Shiraishi, and her drive to understand an extra-solar migration (even as it threatens human existence) is well rendered; though perhaps that is simply a function of me filling in the blanks from having watched a hundred or so anime series. I'm reluctant to say much more, as even though this novel (really a fix-up) is rather dry, it does evidence a lot of hard thought and so is worth reading on that basis. ( )