According to the ESRB, this game contains: Fantasy Violence
Parents don't have anything to worry about. There are no sexual situations and no instances of questionable language. The "fantasy violence" consists of the typical young-boy-with-a-sword stuff and never gets bloody or graphic. The storyline is very simple and uncomplicated, and the game is very easy to play once you figure out how to turn the auto-battle off. Safe stuff for kids.
RPG fans with a PSP probably already own this since we both know how slim pickings are right now, but be honest with yourself—it's nothing special. A hero, a quest, and the same old stuff you've been playing for the last 15 years or so. If you absolutely have to have an RPG on the go, this game works. If you want something a little better, hold off.
Deaf and Hard of Hearing gamers will have no problems. There are subtitles for the cutscenes, and most of the time there are no voiceovers during gameplay. Plenty of text to read, and no important auditory cues since the battles are turned-based and the exploration of the world is slow and methodical. No barriers here.