That's the part the bugs me, Shinpachi. I can't imagine the typical Japanese warrior going to war intent upon killing the enemy... dressing as the enemy. I don't mean to insult, Shipachi-san, but I have to say that frankly seems like bullshit to me. Everything that has been printed was that the Japanese warrior was proud to a fault. I can't imagine the ridicule (or worse) that a Japanese naval aviator would receive preparing for a surprise attack against a hated enemy and yet dressing as them being acceptable, condoned or even allowed on ship. Just as the US characterized Japanese warriors as "monkeys", "eyes too slanted to land on carriers" and other such nonsense, the Japanese were doing the same noting that US warriors were "barbarians", "simple" and "ruthless". Imagine a US naval aviator prepping for the Dolittle Tokyo Raid dressing in traditional Japanese clothing. That aviator would have been drummed out and sent to confinement in a heartbeat. Especially during such a highly secret and important operation as the Pearl Harbor attack.
Doesn't seem right by any stretch of my imagination. In fact, I honestly think that Mr. Neagle has confused a post attack ship rumour with memory (reality). I honestly don't believe that such a thing happened. A Hawaiian University ring stuffed in a pocket of a proud Japanese aviator recently returned to the homeland? Maybe. But full US civilian clothing blatantly displayed under his flight suit during operational preparations? Phhhttt... don't believe it.
Yet if it was a ruse that was meant for strategic purposes of escape/evasion (most likely) or perhaps additional behind enemy lines subterfuge/operations (NOT likely), perhaps I could buy into it. Just the first I have ever heard such a thing. And I can't believe some historian hasn't uncovered such a plot beforehand.