Ensure the save hasn't been accidentally moved to an external drive that is currently unplugged.

Naruto Shippuden: Ultimate Ninja Storm 4 is the pinnacle of anime arena fighters, but nothing kills the hype faster than seeing the "Save data does not exist" error message. This glitch often occurs on PC (Steam) and consoles after a crash, a system update, or when moving files between directories.

If your contains special characters (this often breaks Japanese game save paths)

Permissions issues often prevent the game from writing or reading from the AppData or Steam folders. Navigate to the game's installation folder. Right-click NSUNS4.exe . Select > Compatibility . Check "Run this program as an administrator." Apply and relaunch. 5. Console Fixes (PlayStation & Xbox)