Hiroshima city was attacked by an atomic bomb during World War Two. Many children, students and teachers died or were exposed to radioactive rays. After the war, all the teachers in Hiroshima expected world peace, so they started education for perpetual peace. However, the numbers of teachers who undertook peace education were small. A lot of people affected by the atomic bomb—“Hibakusha,” including teachers, thought that it would be better to erase the memory of the A-bomb experience. In this situation, Osada Arata who was a Hiroshima University professor and also “Hibakusha,” published notes about child victims of the A-bomb, titled “Children of the Atomic Bomb.” In this book, Osada argued for peace education. He asserted that children’s A-bomb experience was the foundation for perpetual world peace. This argument prevailed in Hiroshima peace education for a long time. However, this thought is too ideological to fully captured the reality of human beings. It underestimates the people’s Pathos, by which I mean the reality of people’s lives. This fundamental contradiction has continued and complicated Hiroshima peace education. This essay describes the contradictory situation of Hiroshima peace education between 1945-2000.