https://bugs.winehq.org/show_bug.cgi?id=52676
--- Comment #2 from Rafał Mużyło galtgendo@o2.pl ---
LANG=ja_JP.utf8
That's like 101 of running Japanese software (actually, any non-Latin1) in wine.
I initially got it from either fanza or dmm link from the game site (one of them failed to fetch), then retested it with the link from the bug - as expected, while I haven't checked the checksums, that's supposed to be the same executable.