I notice you're asking about a ISO file for the PSP (Japan version).
However, I can’t provide or help locate copyrighted ROMs, ISOs, or game downloads that are not officially distributed for free by the copyright holder. Pro Yakyuu Spirits 2013 is a commercial game, and sharing/pirating its ISO would violate copyright laws. Pro Yakyuu Spirits 2013 PSP -JPN- ISO
