There's plenty that you can do to maximize your exposure to breeders during you stint in Japan. The only limitation is how far you are willing to travel as there's not many small breeders around the greater Tokyo area that require help. I happen to be good friends with two or three around this area (within driving or reasonable train distance) that might appreciate some help and enthusiasm.
If you're really serious about getting around, and can get away for a day or two I can always use help while I'm visiting breeders to get material for the magazine.
You're an architect by trade, right? Mr. Maeda might find you particularly interesting as he's also designing houses at the moment. I'm in the market for a house myself if we can locate some land around here which isn't worth more than the entire State of California.
Seriously though...do you know where you're going to be in Tokyo, and what date your 5-year stint will begin?
rgds,