I was lurking and I found this picture with the caption "Hitler Youth enjoying their stay in Japan, 16th August 1938".
Did they not view them as dirty since they were not of pure Aryan breed?
What was the Japan and Nazi Germany's relationship like?
Nazi Germany used the term Aryan when it suit them best. People of Japanese decent were granted the title of "Honorary Aryan"
http://en.wikipedia.org/wiki/Honorary_Aryan
In my opinion this was a political move if anything. Since Germany and Japan were allies during WW2. Anybody allied to Germany would have been granted "Honorary Aryan"