Japan and Brazil's ties go back to the early 20th century, when the first Japanese immigrants arrived as farmers in the South American country. Brazil is home to the largest Japanese community outside Japan — 1.5 million of the country's 205 million people identify themselves as Japanese-Brazilian, including a handful of members of the Brazilian Olympic team.

But although the host countries of the current and next Summer Olympics share cultural bonds, compared to Brazil, where nearly half of people consider themselves mixed-race, multiculturalism remains elusive in Japan, where ethnic homogeneity is often held up as something to be proud of.

Though Japan is home to the second-largest Brazilian community outside of Brazil, only 2 percent of the country's population was born overseas. Compared to most other developed countries, immigration to Japan is negligible. However, despite having to deal with an aging, shrinking population, the majority of Japanese seem to prefer it this way. In a recent Yomiuri Shimbun poll, only 37 percent said they felt that more non-Japanese should be accepted to fill the gaps in the country’s labor market.