I do not know how to get to specific areas of Japan, or what your current situation is, but I do know the Japanese government sponsors a lot of programs get native English speakers, especially American English, in their schools.  The program I hear about the most is the JET program, which places those with a bachelor's degree in Japanese schools.  It's as much about cultural learning as it is language from what I hear as well.  I don't know if this helps, but the Japanese government should have plenty of websites with details on multiple programs like this one, hope it helps some.