A nostalgic scene from the Showa era. The activities of men and women were commonplace. Japan during wartime. One day, a wife waiting for her husband who had been sent to war receives news that he had been killed in action. She meets a man who had lost a loved one in a recent air raid, and before they know it, they have become romantically involved... Mirai lives each day bravely, worrying about her husband who has left for the battlefield. Her father-in-law, who lives with her, pressures her into a physical relationship, and satisfying his sexual needs becomes a daily routine...