If anyone is interested in merging the info to UVL, see
snesmusic.org/hoot/v2/. At least add the missing titles if not the missing games (the latter needs more info than the site provides). The romanized titles aren't standard Hepburn either, so they need fixing but can be used as is for now.
Yeah I would like to do that if I had just enough time. I already looked for (near complete) databases for some old Japanese systems, which is not an easy task. My favorite link I found in the past would be for a Japanese database for Micro-7/FM-7 games.
www.retropc.net/fm-7/museum/softhouse/index/index-title-01_a.html It is pretty complete as it seems and has good year/publisher info and even screenshots and box shots for most of the games, but needs some work in giving a proper romanized title in some cases.