Title: Shin Wa Den
Alternate Title: 2189
Company: Great
Format: 1 HDI image
Size: 3.7 MB Compressed
Game Type: Adventure
Adult Content: Nudity

You play a young man who loves books, trapped in a city where all entrances to building lead to the same interior (What strange game design.) It appears this game was also released for the PC/AT, and you can find a review for it here. There's a little more interactivity than most Adventure games for the PC-98, as there's a navigatable world to explore.