Thinkin' 'bout heading to Japan? Look here.(always expandin)The answers you seek will be there.
To answer your question, it largely depends on the people, and places you are. Some may be cool about it, while others hold the homogeneous views and spiteful attitude towards everyone NOT full blooded Japanese. Foreigners seem more desired in the cities, than in the countryside, however.
Also, please, please, PLEASE look the stickies, when you want to ask that kind of question. Thank you for your patronage. This thread will now be locked