I think Japan is the best country in crypto because bitcoin comes from Japan and Shatoshi Nakamoto who made it. But this is my opinion i always heard that Switzerland and Denmark, Germany who first adopted bitcoin i think they are the better too, Let me conclude but the founder and the creator of bitcoin comes from Japan and that's why Japan is the best in cryptocurrency industry.
for in asia i think japan and korea are still one of the good country for the development of crypto. now this crypto will still continue to run in all countries, but for the best country still japan and korea. I do not understand if the country in Europe became the best destination for crypto.
its really difficult to introduce the best crypto because even we think a very good crypto but still some are not paying well.