Do not just drag and drop files. Download a tool called (Memory Card Manager for PCSX2).
To keep your saves separate:
This is the most common mistake. Save files are region-locked: Most common for the English version of UN5. Japan (NTSC-J): Used for Narutimate Accel 2 . Note: A Japanese save will not work on a European ISO. 🛠️ Troubleshooting Common Issues Save Not Loading naruto shippuden ultimate ninja 5 save data pcsx2
You can find 100% completion save files on community sites. Ensure you download the version that matches your game region ( for Europe/Australia or NTSC for Japan/North America), as saves are region-locked. GameFAQs : High-quality saves are often hosted on GameFAQs . Do not just drag and drop files