Japanese classes written by Haruhiko Okumura (okumura@edu.mie-u.ac.jp). jsarticle, jsbook, and jspf classes are provided. In addition, several style files are provided, too. The classes themselves do not automatically enable the support of Japanese language. You'll need set up LaTeX environment appropriately so that it can handle Japanese, not only LaTeX itself but also viewers of outputs. WWW: http://oku.edu.mie-u.ac.jp/~okumura/jsclasses/