You will not have any problem buying a Mac in Japan, you can set OS X to run in English when you install it. Also there is an English speaking line for the online Apple Store in Japan. On the Internet Online store you can buy the MacBook with a Japanese keyboard or a US keyboard at no extra charge. Also, they do have Apple stores in all the major cities in Japan, especially Tokyo and Osaka. Almost all our Macs here came from the Osaka Shinsaibashi store and I use the English keyboard and OS always. Before OS X I had to use Japanese, OS X is a winner. Here is the Apple Store English Line Number, use it in Japan or go to the Apple store. 0077-78673-6 it says it's toll Free. I do not mean to sound like an Apple rep, just trying to help.