Hiroshima is a major city on the western end of the island of Honshū in Japan. On August 6, 1945 (72 years ago), the United States dropped an atomic bomb over Hiroshima in an attempt to force Japan's surrender in World War II; the blast destroyed the city and killed 90,000–146,000 of its inhabitants. Hiroshima was rebuilt and repopulated after the war, becoming a major city again.

In the Archie continuity, Hamato Yoshi was originally from Hiroshima, and he and his great uncle Gyōgi were in the mountains outside the city when it was bombed. The two survived, though Gyōgi went blind from watching the atomic blast.