If you find an "English PSP ISO," you are downloading a fan-made translation patch. While fan translation groups generally do excellent work, there are risks involved with this specific title:
Because there is no stable English PSP ISO, you should look toward these officially supported platforms: danganronpa 2 goodbye despair psp iso english download full
Whether played via a retro PSP ISO or a modern console port, Danganronpa 2 refines every mechanic introduced in the first game. The Tropical Setting If you find an "English PSP ISO," you