Hi Mike!
We have had the same experience with
Adult Site Translations. Japanese specifically is not the easiest language to drop into graphics. Instead of having your client do it themselves I HIGHLY reccomend that you/they use a designer who is accustom with it. It's not just a matter of dropping in an international font driver when it comes to some languages.
Shoot Lee an email, he can help you out,
[email protected]
Regards,
Gary-Alan