If you need to extract many such files, temporarily change your Windows system locale to Japanese. Go to > Clock and Region > Region . Click the Administrative tab. Click Change system locale... and select Japanese (Japan) .
This is the most reliable method for handling Japanese character encoding directly. Open Command Prompt or Terminal.
This archive tool is generally better at detecting Japanese encoding automatically and often manages it without changing system settings.
If the archive is a .zip containing Japanese characters, sometimes WinRAR handles it better, though 7-Zip is preferred for actual .7z formats. 3. Summary of 7-Zip Features for Japanese Files
Restart your computer, extract the file, then change it back. Method C: Use Bandizip or WinRAR (Alternative)