Didn't start to play yet, I'm still into the "introduction".
Second, I've never played the previous titles on PSP, but for all saw on youtube seems like very action.
Of course in the beginnig it's showed how the game works, how you can place your fellows for taking advantage of their skills during the battle; for the dungeons seems like you have to talk with someone, so basically you should follow the story, but I played not so much to be able to confirm this statement.
In any case I feel the game is not very import friendly, especially if you don't know anything about japanese.
I noticed that the previous ClaDun arrived in the west on digital, maybe it will be the same with this one.
Anyway, I'll post other impressions as soon as I go further into the game