I looked through the threads, but I couldn't find anything related to my problem. :\
I've downloaded the .rar file and unzipped it, and in the folder I have four files: autorun.inf, MOONPARROT.ico, 蒼黒の月-インストール.EXE, and 蒼黒の月-スタートメニュー登録.EXE (I ran the last two file names through google translation and they both seemed to be for installation, but I don't know what the difference between them is).
When I click on either of the .exe files, I get this message:
I've set my computer to Japanese, so I'm not sure why the error message is coming up so strangely. I really can't tell what the problem is. :\ Any help would really be appreciated!