((Forgive me if this has been asked before; if so, I didn't find it! ^^; ))

I have a friend who lives in Hong Kong, and I myself will possibly be in Japan around the release date (am going in Fall 2013). So, I am wondering about the internationality of the game. Is it going to be available to all nations? Or only certain ones?

Dunno, I hope it'll be available for most of the world. I guess that's up to the individual countries to decide.
I'm pretty sure I will have it available, should I even want to buy it. Have no idea about Hong Kong and Japan, but I think they will be possible. There are after all lots of people living in those areas.