touhou 13 crashes during dialogue of the last boss at stage 2 in japanese version

I have touhou 13 patched to the English language and applied vpatch.
but i wanted to play Japanese so I patched through the outdated thcrap_configure.exe to japanese version (patch #304).
and run the game windowed at 1280960 resolution.
i then accidentally clicked the maximization button so it becomes fullscreen. when i changed it back to window it now only has a small window (around 680720 or so)
so i changed the resolution in vpatch.ini to 128*960. it worked. but the game crashes at stage 2 when the last boss gives her dialogue before entering combat.
i tried it windowed, fullscreen. i updated the thcrap and reinstalled the jpn pack through thcrap.exe. i made sure i installed only jpn patch and the english patch is not mixed with it. but it still crashes.
is it possibly due to a bug, or a corrupted game file? or something with vptach?

Reproduce the stage 2 last-boss dialogue crash using the Japanese patch, vpatch.ini, and the windowed/fullscreen settings described. Compare runs with the Japanese patch and the English patch, then determine whether the crash persists after reinstalling through thcrap.exe and whether it is tied to the resolution or patch configuration.