"Diagraph01" lives in Tokyo, Japan. ja.wp's admin from 7 May 2006.
I'm taking the Multilingual statistics (ja) and List of Wikipedias (ja) in Japanese wikipedia. Although, I think that it will concentrate on acquisition each language information and attachment "+interwiki" for the time being. Therefore, I can't write new contribution.
See refer: ja:User:Diagraph01(Talk).