it is really a good news and good to hear about the adaptation of bitcoin/cryptocurrency in different country. But Japan needs to monitor its growth, Visioning to be the world first country who widely use crypto will take more complain and supervision. There are many ICO who will take advantage of it those crap who are expert in scamming people. (NOTE: I dont Hate ICO as a whole/in general, I hate those ICO who make promises and afterwards you will left behind)