Good news and good read mate. I am not surprised actually; Japan is one of those countries that are always very aggressive with venturing in new stuff and developing new technologies that can help improve their nation. And since cryptocurrency is one of those new technologies that can be adapted for the better of the currency and business system of a country, then I am sure that even though it has its risks, Japan would gladly embrace it and make it work for them. That's why Japan is always one of those uprising nations and economies because of that ability to see the good in something rather than focusing on the negative.