When Mr. Lee’s family boarded the ship in 1960, his parents thought Korea would soon be reunited. Mr. Lee’s mother gave him and his four siblings cash and told them to enjoy their last days in Japan. Mr. Lee bought a mini pinball-game machine. His younger sister brought home a baby doll that closed its eyes when it lay on the bed. “It was the last freedom we would taste,” he said. He realized his family had been duped, he said, when he saw the people at Chongjin, who “all looked poor and ashen.” In the rural North Korean county where his family was ordered to resettle, they were shocked to see people go without shoes or umbrellas in the rain.