busa, a Japanese player who did research on the Ki-84 for HTC using Japanese language sources.
http://bbs.hitechcreations.com/smf/index.php/topic,262941.30.html
Busa seems very well versed in the history of the Ki-84.
But I still don't see any references to fact that "less than 10" were built, and none saw any action.
Books and web sites seem to include the "C" model in with Lb and Ia and NEVER infer that the "C" was never used in combat.
Most references will include derivatives that never saw combat, such as the Ki-84N and the KI-116.
And while I'll agree that Busa SEEMS to know what he's talking about, he's just another player.
For all we know he could be misquoting the facts. Just because he says he's Japanese doesn't make him an expert in my eyes.
Soooo, I will ask again, where did you find the statements that "less than 10" were built, and "none saw any action" ??