No, he's asking if there will be multiple files, so he can save each one to a different file, so he can get to them easily at any time, without going to a different character haflway through one scenario.
Anyway, the PSP comes with a memory card that is able to hold up to a certain amount of games. It's able to hold more than one game. If it doesn't, then that's because SE didn't want you to do more than one save file. I've never seen a game where you weren't able to have more than one save file, except on the DS.
And if SE decides not to go the route of multiple save files possibility, than we definitely won't know any time soon. That's not something we're privy to at this time.