After Japan's defeat, it was in a state of military occupation by the United States.
Many Japanese soldiers were killed in battle, and the families of Japanese women were not accepted by the Japanese government, and they specially approached American soldiers in order to eat.
For a long time, the Japanese government had to recruit many young Japanese women and women to serve the American soldiers.
When diseases in the U.S. military became rampant, MacArthur had to ban the trade.
But these people eventually became "abandoned women", and one of them continued to live in Japan with mixed-race children with the US military.