[SSJup81]

IMO, you would probably be better off getting into an exchange program after finishing high school, so that you can study abroad for a year or so.

Also, in order to get a Working Visa, you need a Bachelor's degree, unless you find someone to sponsor you.

At least if you get into a program through a college or university that has an exchange program with Japan or offers it, you can go over there (with a Student Visa), see how you like it while earning your degree. You can then go back on your own and maybe have an easier time finding a job.