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From ebookjapan: The Y chromosome has vanished. Males have completely died out. In the year 2012, due to the outbreak of a series of magnetic storms in our solar system, the Y chromosome in humans on Earth was destroyed. The remains of the human race have succeeded in reproducing via surrogacy. Earth has been born again as a new, female-only world. However, in the year 3992, Princess Anzai Ianto was born. He is the world's only man.