African Asian Connection Is Often Seen in Anime
You can walk from Africa to Asia if you are willing to commit the time and shoe leather. Naturally, there has been a lot of interaction between the peoples of the two continents for centuries. Some ancient archives claimed that the founders of the Ninja warrior cult were black Africans. Semen and ideas have been exchanged, frequently. Art and philosophy mixed. Today, the internet has replaced the camel caravan and dusty walker. Thus, black characters for decades have played major and minor roles in the speculative Asian fantasies often drawn in anime. See Afro Samurai . There are others.
See Wikipedia for a more academic perspective of the black/yellow connection then come back here as we explore this topic as it relates to AFROFuturism.