I got my copy from Yesasia.com. They have/had a japanese version and an asian version. I bought the asian one because you can choose english language and not have to sit there and wonder what the kana says...or spend 10 minutes trying to read it cause you forgot all the kana you learned in japanese class, then spend another 10 minutes trying to translate it . It will only run on japanese ps2 unless you have a chipped one that will run japanese ps2 games.
Ummm...i just looked it up and they don't have the asian verison anymore. If you can read korean, you can buy the Tokyo-Seoul version.