Life In 19x19

Hi

If I were a Japanese 2-dan (let's imagine), where would I go for the latest Go theory, articles, news, and SGF files from tournaments? I know there is go4go and other excellent resources in English but I wondered what the equivalent sites were for Japanese players.

I don't know how popular it is with Japanese 2 dans, but there's this site by Japanese chap Mr Kin I use with game records and tournament charts. https://gotoeveryone.k2ss.info/news/

Also mamumamu's rating site.
http://mamumamu0413.web.fc2.com/index.html

And there's Nihon Ki-in site.