These titles are the closest you will get to an anime battle royale on the handheld, featuring massive rosters and free-movement arena combat. Dissidia 012 Final Fantasy
Grab your emulator, secure your ISO, and may the best anime protagonist win! anime battle royale psp games download link
Once you have your file (ISO), you cannot run it on a stock PSP easily unless you have Custom Firmware (CFW). The modern solution is emulation. These titles are the closest you will get
Kenji looked at his battery indicator.