MRR Zine Archive
Would just like to point you towards a website I found recently that has scans of most of the old issues of the american punk zine Maximum rocknroll.
This zine had a Japanese scene report full of good information starting around issue 10.
There are also interviews with many Japanese punk bands such as The Stalin, Aburadako, The Execute, and so on.
And you can find reviews of Japanese records in the reviews section of the mag.