I know they exist; http://www.biblica.com/bibles/japanese/. But it would be highly useful to be able to have it searchable within Logos -- some Japanese friends of a friend have been asking Biblical questions and having a way to give them relevant scripture in their own language would make things much easier.
/Robin
Yes, it does seem a little odd, with no Japanese. My family's Japanese and most of our Christian friends, so Logos isn't a player. Instead, J-Bible, etc. The older Libronix Japaneses interlinear goes for $400+ on Amazon.ne.jp and no wonder! But truthfully, an expanded Chinese section would probably be even more desirable. The world is waiting!