There were five Japanese cities on the US’s initial atomic hit list and Nagasaki was not one of them
Kokura, Hiroshima, Yokohama, Niigata, and Kyoto were on the list. Kyoto was spared, according to legend, because US Secretary of War Henry Stimson loved the ancient Japanese capital and had spent his honeymoon there decades before. In its place, Nagasaki was established. On July 25, 1945, the United Kingdom approved the bombing of four Japanese cities: Kokura, Niigata, Hiroshima, and Nagasaki.