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U.S. Air Force Major Claude Hilery, who took part in the bombing of Hiroshima, lives in a small town in the United States. At the time, he simply "followed orders". Now, the pangs of conscience for his atrocity haunt him, he blames himself for the deaths of thousands of people and above all, he wants to change the past. At this time, by the will of circumstances, he finds himself in criminal history… Thousands of kilometres away from Major Ilyer, in Japan, a Japanese woman Akiko is re-reading the diary of her first love for a man who is no longer in this world. At the time, this love, due to the traditions and moral foundations of pre-war Japan, was doomed. The novel has another protagonist, a Japanese girl whose past is getting in the way of her future...