Is it useful for lawyers or certified public accountants to learn Japanese or English?

If you don't want to go to Japan to develop law, you'd better learn English. Japanese people don't like to hire lawyers. Generally, it can be solved without a lawyer. Try not to find a lawyer.

I think English is better if you pay attention to the meeting, because English is more popular than Japanese after all. But if you want to stay in a foreign-funded enterprise, you can also learn a little Japanese. When a foreign-funded enterprise recruits, it seems that its own company has a cooperative relationship with companies in which country, so it prefers people who understand the language of that country. I hope it helps you. O(∩_∩)O~