For now countries in Asia seem not to ban Bitcoin soon except China.
Hong kong government doesn't regulate or ban Bitcoin, but Banks are not friendly to Bitcoin. If they find you are engaged Bitcoin industry, your bank account will be closed without notice.
Korea gvernment is now getting friendly to Bitcoin, and their tax for bitcoin is low.
Japan government is still open minded to Bitcoin, but they regulate the every Crypto currency exchanges. You need to get a license to run exchange or do ICO in Japan.