I'm not sure there is anyone else on here from Okayama. Have you found any other players there yet?
However, just across the 'border' in Hiroshima-ken is the lair of the mighty Danguinius, player of 40K and Warmahordes. Apparently there is quite a good scene down that way. Drop him a line if you are in need of a gaming fix. I'm sure he can tell you more about where, when, how and who in that part of the country.
Anyways, once again, welcome. feel free to dive right in to the forums. We don't bite (much)
Cheers
MTP