Hi, I've been looking around the internet to find out what this was and I've found several japanese wizardry games which seem to be related to the wizardry series.
0ne of them seems to be a compilation of wiz 4 and 5
find the link on this page to see the covershttp://www.coversite.net/html/psx/indexw.php
there also seems to be another one which I don't know what it is but is definitely a real wizardry game since it has the same logo and on this picture of the back cover it says copyright 1998-2000 1259190 Ontario Inc which is Sir-Tech
see picture at
There may be others and possibly this one you were refering to is neither of these two games, but seeing these games makes me realize that sir-tech is making at least some money of these games in Japan.
Anyways this just seemed like something interesting to me so I thought I would share it.