Hi Michael,
There may be some confusion... looking back over my post, it's entirely possible that I wasn't as clear as I would have hoped. Let's see if I can fix that....
Yeah, the initial question of "is this in any Koryu?" has an answer of "I seriously doubt it"... the comment in the Tanaka Fumon clip of this being a "very old traditional skill" is, frankly, garbage and sensationalist editorializing on the part of the makers of the show... it's really not. But, for the record, you'd be hard pressed to find anything involving Japanese swordsmanship that was genuinely a "battlefield skill", by the way...
Yeah, sorry about that... what I meant wasn't that the arrow would miss, it was that, with Isao only connecting at the end of the arrow (at the fletchings), if the arrow was shorter (Western), then Isao would have missed the arrow (and it would have continued unhindered to strike him). I was basically saying that one of the things that allow it to work (as a parlour trick) is the fact that the arrow is longer, giving the swordsman more time to contact the incoming missile, hence the form of archery, and specific equipment having an effect on the outcome.
Yep, the glove is called a "yugake", and is traditionally made of deerskin, with a toughened leather section over the thumb. The reason is that the Japanese draw is done with the thumb, with the fingers essentially just, as you noted, holding the arrow gently but firmly in place. In other words, the arrow isn't drawn back, which loads the bowstring with kinetic energy, the bowstring itself it drawn back, using a form that allows for a larger, fuller draw, as well as greater accuracy than a Western bow, due to the way the arrow is held (it rests aiming straight ahead, rather than across at a slight angle, as seen in Western archery). To put it simply, there is no pinch draw in Japanese archery. Add this different draw method to the design of the bow itself (with the longer upper arm storing more energy), and you have a very powerful weapon. You might be interested to know that the bow was the defining weapon of the Samurai for the vast majority of their history, rather than the sword, to the point that an early name for Samurai families was Kyusen no Iie, or "bow and arrow families", with the overall term of martial education and military methods being known as "Kyuba no Michi", or "Way of Mounted Archery", as the defining aspect of samurai methodology.
Oh, yeah, absolutely. This trick is equal parts Takana Fumon's swordsmanship and precision, and his daughter Tanaka Midori's archery, with very controlled and precise firing of the arrows (including the aim, speed, power etc).
Yep. That was, yet again, another example of sensationalist, but far from substantive, editorializing on the show itself. "The arrows go through the board!" Yeah, okay, great... from how far away? It's just a meaningless demonstration designed to impress people who don't know what they're looking at... which, honestly, is most of the audience of such programs.
Yep, completely agreed. It was a weak shot, but not a weak bow, and it was a deliberately weak shot in order to allow the trick to work. Parlour games, smoke and mirrors, nothing to do with martial skills whatsoever. It may use the same equipment of martial arts, but that doesn't make it martial arts.