1. You need to change your system locale to Japanese to play Japanese games.
2. To avoid unexpecting error, please also setting your system to Japanese locale before unrar files.If you unrared before switching to Japanese locale many files can be broken.
3. You can use Bandizip to unzip file.
4. Please do not use right click to unzip.
Drag the file in bandizip
code page use japanese
then extract it.