According to the ESRB, this game contains: Fantasy Violence, Language, Suggestive Themes, Use of Drugs and Alcohol
Parents shouldn't worry about letting their teenagers play this game. While there are mild swear words sprinkled throughout, there's no gore and nothing that's clearly "adult." There are plenty of alcoholic dwarves, however.
Players whose only gole is to finish the game will find Radiata Stories incredibly brief, but those willing to play the game for its own sake will have plenty to do. There are 177 "friends" to collect, two separate story arcs, and a bonus dungeon—though I wonder if all these extras are worth the effort.
Deaf and Hard of Hearing gamers are in luck; not only is the entire story told in text without any significant auditory cues, but they'll miss the terrible voice acting as well.