It's been a good read so far. I found it quite interesting to hear about the Hiroshima and Nagasaki bombings from the perspective of a young Japanese technician working in the war effort at the time.
A lot of comments in here are throwing around terms like "war crime". I'm not well informed on this subject, but the impression I get from this book at least, wasn't one of anger and accusation of wrongdoing WRT the bombings.
It comes across more as a humble acceptance of defeat, and perhaps a subtle criticism of his own nation's propaganda-washed populous, military-dominated leadership and authority, than anything accusing the Americans of committing war crimes.
He describes the bombings as clearly demonstrating how far behind Japan was technologically. Up until that point he had the impression that Japanese military technology was only slightly behind the Americans, based on reverse engineered equipment recovered from downed planes.
The thing I wonder is if the Americans could have just dropped a single bomb first on a relatively unpopulated area, near enough to a Japanese population center to witness its destructive force, without all the loss of civilian life. They might have surrendered after that. You still have the second bomb if they don't get the message. But I guess there wasn't exactly 100% certainty both bombs would function, and I don't know how long it would take to make another at the time - it's not like we had a huge stockpile of the enriched fissile material laying around.
In any case, so far I'd recommend the book, and I haven't even gotten to the stuff about Sony yet.