It also depends a little on who you think your target market will be? Are you wanting to work with adults, young adults, kids? If it's the younger end I know that the international schools here have psychologists and counselors who they work with directly for kids with issues. It is definitely something that is needed and although it is not yet a major area in Japan, I think that time is coming.
You could also gear to the expat market out here. Just a few more ideas to throw in the pot
