So I just have a couple of questions about the vita version of the game.

First question is, is the game worth playing on vita or should I just play it on the pc??
2: Is there an english patch for the vita version of the game??
3: Since I'm from the US do I have to do anything special to be able to play on Japanese servers?? Hope that makes sense.
I guess the last question is, is there an offline mode for either version of the game or is it strictly online??

Thanks in advance.