That is the problem, 'Tenkara Flies' is not a very precise term, that is why I asked the question.
Any fly, no matter what the hackle can be cast with the appropriate 'western' rod.
As far as flies are concerned, the same situations, no matter where in the world, very often
produce very similar answers. I haven't seen a trout fly, within reason, that can't be used
on any rod, Italian Alpine,Tenkara, Loop rod or Modern Western.
So K, I totally agree with you.