Ben 10: Omniverse 2 is not available on the PSP, meaning it cannot be played directly via the emulator. While the original Ben 10: Omniverse had a Nintendo DS version, the sequel was only released for PlayStation 3, Xbox 360, Wii, Wii U, and Nintendo 3DS

If your primary goal is specifically to play Ben 10: Omniverse 2 on an Android device, you cannot use the PPSSPP emulator. Instead, you have two main options:

To experience this specific sequel on your mobile device, you must use emulators for the consoles it was actually released on: