Tax responsibility?

Good day everyone. New poster, long time lurker. I can’t seem to find the answer for this so I am turning to the geniuses that are redditors. I am moving my wife and child (both Japanese citizens) to Japan this summer. I will remain in my home country running my business. I will be funding everything for them in Japan. My wife will not work or have any income in Japan. My question is, does my wife have any tax responsibilities if I am the one paying for everything with my foreign income from outside of Japan? I also intend to transfer money to my wife and childs accounts to pay expenses. Again, she wont work, my child will be a full time college student. Any advice you can provide I would greatly appreciate. Thanks!