I know you're able to convert PSP games to be able to be played on a Vita, but they need to be in an ISO format. The PSP port is a PBP file and I was unable to convert it to an ISO sadly. Thanks for the reply regardless.
I really want to play this version of the game but I don't own a PSP as of now and the NXengine-evo port of Cave Story to the Vita is pretty bad. Also yeah I could play on an emulator but I'd rather not for convenience sake. If anyone knows how to help with this it'd be a tremendous help, thanks.