After the attack on Pearl Harbor, those Japanese soldiers left alive went home almost immediately. They performed their duties and returned home for their next assignment.
They never left.
Japanese cannot return to Japan after living abroad.
Japanese citizen wife, current alien registration, needs information on proper travel documents to travel to japan to establish residence. She does not have a current Japanese passport.
The ones that didn't die went home immediately.
Byrnes did not want to publicly offer Japan their main peace condition: retention of their emperor, whom the Japanese believed to be a god. He was worried about the administration's public popularity if Truman allowed Japan to keep their emperor in return for Japan's surrender.
Japanese art is inherently Japanese.
Japanese is the nationality.
the Japanese beetle originated from japan.
Return to Japan was created in 2004.
Japan, sharp is Japanese
The Japanese Yen is the official currency of Japan.
The Closed Country Edict of 1635 forbade the Japanese from going to other countries. Japanese ships could not leave Japanese ports, either. A Japanese citizen that left to live elsewhere was killed upon return to Japan.