The Japanese tax authority should do more to reduce crypto tax to enhance adoptions in the region. A 20% from 50% tax cut is still much, I think the Japanese tax authority should make it 5% profit tax to encourage investors/traders and a wider adoptions, especially in their areas.
Again, high tax of 50% or even 20% has the probability of people avoiding to pay tax regularly. The more government reduces tax on cryptos, the better for the growth of the crypto economy in Japan and close by countries.