I think Japan has the highest percentage of adoptors and merchants that positively accept bitcoin as a mode of payment in their country.Japanese was known and had already gone to the world of high technology that consistently supplies best and leading products for their costumers.They were known as the producer of those high tech gadgets and now they already conquer the world of digital technologies which is the newest trend of digital currency used as a mode of payment, the bitcoin.These seems to be a great news for crypto users and the good thing is people in different countries might immitate on how Japan has accepted bitcoin and an additional assets of their productive country,pretty sure this would have a good impact on bitcoins growth of popularity.