Singer appeared on FG before in this old thread. The article in my third post in that thread was written by Britain's most popular wine writer, Jancis Robinson. She likes the wine but points out the barriers to setting up a successful export business.
The care and attention Japan brings to making sake, whisky, and beer in microbreweries convinces me they can come up with decent offering but it will be difficult to price it competitively for the export market.