Here are some other VNs:

• I tried Dracu-Riot and don't even get a window:

002c:err:wineboot:process_run_key Error running cmd L"C:\\windows\\system32\\winemenubuilder.exe -r" (126).

• I tried Hatsuyuki Sakura and got an odd one complaining about not being able to find Startmenu.exe:

StartMenu.exeが見つかりませんでした。

• I tried Suteki na Kanojo no Tsukurikata, which gives me this:

00c4:err:module:import_dll Library UnityPlayer.dll (which is needed by L"Z:\\run\\user\\1000\\doc\\2bcd2b83\\Sutekina_kanojo_no_tsukurikata.exe") not found
00c4:err:module:LdrInitializeThunk Importing dlls for L"Z:\\run\\user\\1000\\doc\\2bcd2b83\\Sutekina_kanojo_no_tsukurikata.exe" failed, status c0000135

• I tried Amrilato, which tells me it can't find the game executable and gives me this:

002c:err:wineboot:process_run_key Error running cmd L"C:\\windows\\system32\\winemenubuilder.exe -r" (126).
Failed to launch. Arguments are:
0 "Z:\\run\\user\\1000\\doc\\4b6a94df\\lib\\windows-i686\\TheExpressionAmrilato
.exe"
1 NULL
2 NULL
3 NULL

• I tried Higurashi Meakashi, which gives me this even though there is a data folder named this:

002c:err:wineboot:process_run_key Error running cmd L"C:\\windows\\system32\\winemenubuilder.exe -r" (126).
There should be 'HigurashiEp05_Data'
folder next to the executable

And it continues on in this fashion. I'm using sys-wine-8.0, but switching to soda-7.0-7 gives me identical results. It seems something is fundamentally broken in the install, but I don't see how that could be given I installed it via Flatpak.