According to ESRB this game contains: Mild Language and Fantasy Violence.
Parents need not worry. There is no blood or guts spilt. No questionable language and even the underlying sexual tension, present in many other Japanese RPGs is nearly non-existent. Furthermore, the story, while dealing with a lot of grown-up subject matters like war, death and disease never looses it' overall positive tone.
Fans of Japanese Role Playing might want to check out the title for it's very original battles which demand a great deal of tactical thinking and are a nice, fresh touch to an otherwise oftentimes somewhat conservative genre.
If you are on the other hand, new to this sort of game, Wild Arms 4 might be a good choice as well. It is a fairly easy game and a quite good introduction to eastern role-playing in general.
If you loved the series for it's exotic Western flavor, you may be in for a bit of a disappointment. There is hardly any left. You can either adjust yourself to the new far more classic setting or leave it be. You are actually not missing that much.
Deaf and Hard of Hearing gamers should have no problems here. Subtitles go all the way and I can't remember audio playing an important role whatsoever during the game.