This book had me fully invested from the first few pages. It's been a long time since I read something so immersive. The pacing was brilliant. Just when I thought the characters were going to get a well deserved breather some new crisis would present itself. The result was an addictive, and slightly stressful, read.
It felt like reading a film or drama, reminding me of K-dramas like Mr. Sunshine or The Nokdu Flower (Hiroki is just Yi-Hyeon, change my mind).
I was a bit worried how the Sci-fi elements would work with the WW2 setting but the 'black winds' actually serve as a great symbol for the aspects of the old Japan, it's values, traditions and beliefs, which are (spoilers) ultimately wiped out along with Hiroshima. So it didn't feel all that out of place.
The lead-up to Pearl Harbour had me on the edge of my seat. And every time Frank and Matsuo's paths crossed, the shifting tensions between them were extremely satisfying to watch. Pinning your closest and only friend to a palm tree with a 6 inch nail is a very classy move, apparently. I did find it slightly far fetched that, after giving himself up to American intelligence, Matsuo seems to travel between America and Japan as he pleases, and his superiors in Japan are cool with that?
Oddly, Hiroki was my favourite character to follow. His arc as far as character development goes wasn't all that pronounced, but there was something about him that makes me want to go back and do a proper study. Maybe he acts as a tie to the past. A petrified, frozen ideal of the way Japan used to rule and be ruled. His search for an ancient, secret weapon which he's convinced will win the war blinds him to the future in a way. He dismisses the atomic bomb, seeing the long lost magic as the only solution. Something like that anyway, there must be more to it.
Also, the final meeting between the brothers, Hiroki and Matsuo, wasn't the ending I wanted for either of them but it felt poetically appropriate.