The Japanese Language Kit allows the use of Japanese characters in
applications that are WorldScript-aware as well as Japanese versions
of Mac software. I'll be uploading Japanese applications and fonts in
the weeks to come.
This is the Japanese Language Kit v1.2 from Apple Computer. It
requires Mac OS 7.1 or greater. Mac OS 8.5 onwards doesn't need it
because it is already included with it.
I've just included the installer files themselves in the download link
above.
JLKCD_12.ZIP: Japanese Language Kit 1.2 CD-ROM with demo applications.