Japanprobe has a good piece on "brainwashed foreigners".
I don't know, precisely — introspection is notoriously error-prone — but I don't feel I fit either of the Foreigner types characterised in this piece.
I meet "clean-room" people now and again, though the most common variant seems to be the cultural one: young people in love with manga, J-pop and the rest, and expects Japan to be a gleaming futuristic sci-fi backdrop to their own transformed lives; a chimeric refuge from the mundane society they are running from. When they find out Japan is just a country like any other — when they realize they never left their own problems and insecurities behind — they feel bitterly betrayed.
The "Yakumo" type would be people who see and love Japan as it really is, warts and all, and simply want to live their lives here. I'm certainly closer to this "type", but I'm not sure how well I fit here either.
I didn't come to Japan because of Japan after all — I got a job and it happened to be located here — and I ended up staying because of a single Japanese person, not because of Japan itself. Now I really do enjoy living here in Osaka in particular, and I hope we will stay here for many more years to come. If push came to shove, though, we'd probably be about as happy in my native Sweden or in any of a dozen other countries.
(Reposted on Google+)