User blog comment:RottenBlock/Toushin Toshi 1 Patch 1.5/@comment-80.144.159.180-20200411101948/@comment-31720212-20200414005534

K-Lite can cause problems, but I'm using it too, so unless we have a settings difference I can't imagine that would be it. Oh well, it was worth checking. As for the settings file, it's true the ini says not to use MIDI, and the music files are only available in MIDI, so I don't think it has any choice (and the game seems to be throwing a MIDI error all the same).

If you're willing to test, by all means go with the Japanese version, or the original translation. If it turns out the error doesn't occur with the original translation, you could use that or maybe my old patch (which only fixes the backgrounds and missing monsters) and might have better luck?

If Rance II did this too, then it may be a potential problem for all System 3.5 games that use MIDI. One possible fix for all of this would be to release a seperate version of the game that uses CD music via _inmm, and then to convert the WAVs to MP3. I'll look into that, see what I can do.