The immigration bureau has an English page for the highly skilled professional visa:
http://www.immi-moj.go.jp/newimmiact_3/en/
The English page for immigration has lots of information, but it is quite vague and not wonderfully organized.
The English page for immigration has lots of information, but it is quite vague and not wonderfully organized.
Also, +1 for consulting with immigration lawyers. I employ/consult with one as well, and that's about the best information you can get, it's well worth the money (and usually the consultation is free) -- they're very unlikely to get the paperwork/process wrong.