Abstract
War is defined differently depending on the historical and cultural context of those describing it. From the perspective of the Anthropocene, however, the emergence of nuclear weapons is of decisive importance because it enables planetary destruction and the extermination of human beings from the entire ecosystem. Since the “nuclear revolution,” we have been living with the risk of an unimaginably huge man-made catastrophe. Many who have examined this issue refer to the importance of education for peace. Hiroshima and Nagasaki are considered symbolic starting points when thinking about the hard-to-imagine devastation caused by nuclear weapons. The attempt of Hiroshima City to provide peace education is a concrete example of an effort to consider the possibilities and challenges that we face.