I noticed him what we saw it here, and adviced him what he wanted to say
more detailed.   You will see it sonn, I believe.

Anyway, I'm not a troff user, and have no good knowledge what is Japanese
treatment of Plan 9's utf version of troff.   However, if it can use utf, and have
suitable fontsets for Japanese, the remained problem is not so severe.   Yes,
90% of the problem would be solved.  ^_^

Kenji