I was hoping Square Enix could develop an original title for PSP.
Don't be silly, people don't make original titles for the PSP.
I had the same problem when I first played. I got stuck at the Riovanes castle battle and I saved between the first and second battles, so I was screwed and had to start over because Ramza was too weak to fight that battle alone.
Same here. Pretty big flaw in a otherwise great game not putting you on the map to save there. If you didn't go after the right skills or did some side leveling then you're pretty much fucked.
I think I did read one thing where you could basically run around him out of his range without being attacked and use Ramza's speed boost repeatedly and then fight him so he doesn't get any turns since you're so fast. That's probably not something one's likely to come up with themselves though on their first playthrough when they're stuck.