The article discusses a sustainable educational approach for developing a moral value of peace by using a historical event, the bombing of Hiroshima. To make the case, the article uses the care theory of Nel Noddings to discuss the interpersonal aspects of peace education. The article asks how care theory handles tragedies like Hiroshima and it can contribute to a moral value of peace. The idea of caring is also examined, through Hiroshima, from a different angle, of the relationship between nature and human beings. The political position of this article is to expand the idea of sustainability by creating values for peace using material related to the bombing.