FILE - In this July 23, 2021, file photo, Yui Susaki and Rui Hachimura, front right, of Japan, carry their country's flag during the opening ceremony in the Olympic Stadium at the 2020 Summer Olympics in Tokyo, Japan. The racial diversity Japan showcased at the Olympic opening ceremony also highlights its lack in Japanese society. (Hannah McKay/Pool Photo via AP, File)

In this image made from video, Melissa Luna Isomoto, a college student, attends a video interview from her home in Yokohama, near Tokyo, on July 31, 2021. The population of people with multiracial and cultural backgrounds continues to rise through more international marriages and an influx of foreign workers, but tolerance to diversity still lags in a country that values homogeneity and conformity. (AP Photo)

In this image made from video, Julian Keane, sociologist at the Urban-Culture Research Center of Osaka City University, speaks during a video interview from Osaka, western Japan, on July 27, 2021. The racial diversity Japan showcased at the Olympic opening ceremony also highlights its lack in Japanese society. The population of people with multiracial and cultural backgrounds continues to rise through more international marriages and an influx of foreign workers, but tolerance to diversity still lags in a country that values homogeneity and conformity. (AP Photo)

FILE - In this July 23, 2021, file photo, Japan's Naomi Osaka holds the Olympic torch during the opening ceremony in the Olympic Stadium at the 2020 Summer Olympics in Tokyo, Japan. The racial diversity Japan showcased at the Olympic opening ceremony also highlights its lack in Japanese society. (AP Photo/Natacha Pisarenko, File)