While never came to PSP, you can try:
Both are available as ISO files for PPSSPP emulator or modded PSP. Naruto Shippuden Ultimate Ninja Storm 2 Psp Iso Download
⚠️ Please support official releases when possible! While never came to PSP, you can try:
✅ – closest to Storm gameplay, 3D arena fights, huge roster. ✅ Naruto Shippuden: Legends: Akatsuki Rising – more story-driven action. While never came to PSP