I've been stationed in Japan for several months and have over a year left before returning to the States. I stumbled upon this site in January of 2013 and have loved reading through all the great info people share. I even contributed to the most recent Kickstarter.
Anyway, after only being able to read about growing things I finally found a patch of dirt on base where no one goes and started my own mini-garden! So far all I have are some onions and garlic, but I hope to venture back into town and find someplace that sells seeds. That's the hard part since I don't read Japanese, lol.
Anxiously awaiting my return State-side so I can really dig into this permaculture stuff