Well I came from Al'abama with a mojo much in need, and I'm bound in Shigamura with a pasture full of weeds...HI !! and WELCOME to JREF.
Yes, I have never, nor will I ever tan, and all that remains of my intense redhair has faded to some under-exposed pastel orange. Yet, here I remain. I have been treated as well as a person generally could expect in the circumstances, and have few complaints otherwise.
In by far most cases, the 'native' population in Japan will treat even very white folks with the proper respect that the system provides. (meaning it IS relative, but...)
I don't think you'll have to worry about that, but, what do you think of Japan? What would you perceive as being the scenario in your daily lifestyle once here? MM