The population of the world has almost been completely wiped out, after a large nuclear war. The only remaining city (Olympus) in the world has a population comprised of 50% humans, and 50% clones (called bioroids). E.S.W.A.T. is an advanced military unit governed by the Prime Minister (named Athena). The central processing computer of the city (nicknamed Gaia) is housed in two of the largest buildings in the city (Tartaros and Daidalos), the duties of the Gaia are to control daily functions of
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