https://bugs.winehq.org/show_bug.cgi?id=47509
--- Comment #4 from alexsandr.2002.m@gmail.com --- (In reply to Sagawa from comment #3)
I sent a patch, https://source.winehq.org/patches/data/170599 . With the patch, demo version starts successfully. Could you try to run product version of Touhou 15.5 with the patch?
How can I install this patch?