Description of Nana Toshi Monogatari: Hokkyokukai Sensen
The story begins in 2190, more than a century after the "Great deviations" that occurred in the years 2086-2088 and claimed the lives of 10 billion people. Two billion of survivors found refuge on the moon as long as a few meteorites, containing the virus, not destroy it. People returned to Earth and erected 7 citiesand created the government and the Olympic system, designed to prevent a repeat of the "Great deviations" and the use of its technology countries in the military sphere. Of the seven cities in three (New Camelot, Kunlun and Genesis of Aquarion) are currently at war.
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