Yes, I'm also amazed how Japanese really embrace bitcoin in their daily lives there. I think they are doing a great job as leaders in bitcoin market, and it just a matter of time before another nation would adopt bitcoin because Japan is setting a good example. And Japan has greatly impacted the price lately, pushing it to $1600-$1700.
Japan right now is the main reason for the noticeable surge of the Bitcoin price and we have just started here. Japan is poised to open up at least 10 Bitcoin exchanges maybe within this year.
And with this development, am sure that other countries would took notice and soon can also be adopting Bitcoin as a currency along with their nationally recognized fiat money.
Yes, if Japan shows favorable development and the impact of bitcoin on the country, the rest of the countries will also begin to accept crypto currency.
It's possible, but it won't happen so quickly as we would like to. Japan has made this step, but they have a really different culture, so it's possible that bitcoin fits them much better than the other people in the world. They are really good at following the rules, they can work hard for just a little honour, etc. And they're really good at digital things, so bitcoin will be just the part of the everyday life there, I'm sure they will adopt it easily.
Other countries are really different, so despite of the good news and the good example, so adoption of bitcoin won't be as easy for the others.