Hi there!
I am an Englishman writing a paper about the Japanese in Thailand. I am a postgraduate student at Chulalongkorn University and I would love to hear from the Nikkei in Thailand. Apparently, there are as many as 10,000 or so, as of 1993's figures, but there seems to be precious little written on the subject (or at least, not in English).
Best Wishes,
Adam