Blacks won't be honorary Aryans. They are black, they are from Africa. All of the writings the Nazis put out on racial theory are pretty clear on this, and other racial writings of the late 19th/early 20th century were pretty clear that blacks were quite different. The Nazi attitudes towards the Japanese were pretty negative, Germany reaching back to the late 19th century was big on the whole "yellow peril" thing. For practical reasons, because of a military alliance, this was played down but this could be managed because the Japanese were allies and also far away.
Again, remember that mixed race GERMANS who were the result of African/German sex during the occupation period after WWI were sterilized by the Nazis to prevent any more race pollution. While some people could be promoted to Aryan status, such as "Aryan" children of Slavs for adoption, the most you could see is blacks who were diplomats or business men from countries the Reich had relationships with being tolerated on Reich territory. Those blacks living in territory administered by the Reich - slavery.
Again, remember that mixed race GERMANS who were the result of African/German sex during the occupation period after WWI were sterilized by the Nazis to prevent any more race pollution. While some people could be promoted to Aryan status, such as "Aryan" children of Slavs for adoption, the most you could see is blacks who were diplomats or business men from countries the Reich had relationships with being tolerated on Reich territory. Those blacks living in territory administered by the Reich - slavery.