Re: (Help! can't play) 千夏の夏休み
The problem, i think, may have been caused by the VSFilter.dll (the one responsible for subtitles). You need to disable/rename in order to play the game. I managed to play mine by renaming it to _VSFilter.dll. You will lose subtitles in your videos if you do this. Just rename it back to VSFilter.dll to reenable the subtitles.
I use CCCP, so my VSFilter.dll is located there. If you have other programs that uses VSFilter.dll you may have to rename them as well. Kinda tedious tbh.