That's a great news, but I doubt its credibility, give us a way to verify it. I do not want to believe and those that are not real. If Japan accepts bitcoin as a payment method, this means bitcoin is getting more acceptance, and it will grow even further. It is the premise for bitcoin to stand firm in the market, and it never gets overtaken by other altcoins. Japan is a very modern country, bitcoin is acceptable, meaning bitcoin is a good investment, so we should support bitcoin.
Yes, it will be great to see some official surce, in order to verify this info.
I know that in many countries merchants accepts payments in bitcoin but on the end of day, they have to exchange bitcoin to local currency.
They can't pay salary in bitcoin or give bitcoin to the banks, for example.
So, it's possible, I guess, to use bitcoin as payment method, but it's still gray zone somehow without clear regulation from the government.