I've never been, but I'll be there very soon. I don't travel much, but Japanese are good people. Unlike, their neighbors, literal niggers of the orient. I respect the history and what they are a part of, and they are, to me, allies. I have a great opportunity to learn more by visiting, and I was curious whether there was anyone here that would be able to provide some information regarding places to visit or things to experience that would be useful and helpful in our journey.
The commonly used derogatory term for black person is:
黒んぼ (kuro n bo)
... But I'm unsure how to translate it because I don't know enough contextual Kanji... my best guess is something like "blacks are inferior (crude)", but it has more nuanced meaning than that.