I've been an Amiga user in Tokyo, thanks to Mr. Kubota, the only still-remaining Amiga user in the capital as far as he's aware. He lent me a spare 100V PSU, which I accidentally brought home, leaving my 220 V one in Japan to rot. As a result, my A4000 has been out of action for several months now. =(
Anyway, Mr. Kubota has three A4000s in various configurations. He remarked that he found it odd that I jumpered mine for NTSC operation when he had jumpered his for PAL operation in order to view demos. He's also got A3000s, A2000s, an A1200 and an A600 which he's built into the Mac SE-like case of an indigenous computer from Fujitsu called FM-Towns. It's a very cute hack.
There is still an Amiga retailer, I think it resides in Nagoya. Also, if you happen to visit Shimokitazawa in the Setagaya ward of Tokyo, you can find a video studio wiith a big Commodore-Amiga sign outside their shop.
It's just a shame that Commodore never managed to release a double-byte AmigaOS (OS3.2 was supposed to have this), since I think that the Japs would be more inclined to use the Amiga had it supported their language (the current solutions are home-brewn and of limited usefulness, let alone comfort).