Few years ago, when my brother was traveling to usa, he transited in japan’s airport and bought a bunch of kyoho grape.
I told him many times to send me any kind of grape vines he found abroad, but he never did (anyway it’s not easy and very expensive), and he didn’t send any of the kyoho grape also, but managed to send some of the seeds.
i was so happy, but i didn’t know anything about grape seeds germination until i failed to germinate them and searched in the web, but it was too late…
I’ve just found an Indonesian blog who just started raising kyoho and pione grape not long ago. You can visit him at http://thomasgrape.blogspot.com/