Install Japanese and international fonts
First, you will need to download and install the package fw_intlfonts-1.2.tardist from SGI.
Installing this package only makes fonts available. You must tell your X server about the new fonts. You can tell one X session to use the installed fonts with:
% xset +fp /usr/freeware/share/emacs/fonts
To make the effect permanent for future X sessions you probably have to edit certain files in your X installation. For instance, you might include the xset command above line in your ~/.xinitrc or ~/.xsession file, or edit /var/X11/adm/Xservers to extend the default fontpath.
Pertinent nekochan.net discussion is available here