The save data for Naruto Ultimate Ninja 5 on Aethersx2 can be found in the C:\Users\YourUsername\AppData\Local\Aethersx2\games\Naruto Ultimate Ninja 5 (SLPS 660.44)\ saves directory (assuming you've installed Aethersx2 on your C: drive).
: Find your existing save file on your computer or old console. The file should be compatible with the PS2 format.
Before diving into the "how," let's understand the "why." Unlike modern fighting games where characters are unlocked via story mode, Ultimate Ninja 5 uses a complex unlocking system:
: Select Slot 1 and navigate to your downloaded save file to load it.
To get a for Naruto Shippuden: Ultimate Ninja 5