 The game begins near the end of a Central Code cycle , while mankind has learned about the impending disaster and built " Arks " , flying stations intended to float in the sky and house most of them in a deep sleep state for the duration of the Reborn . The operation works for one hundred years before objects falling from the Central Code hit the Arks and cause them to crash to the surface . Its passengers die or awake , now at the mercy of those who remained on the ground as well as the Otellos ; a new , warped species which arose from the dropped pieces of the Central Code . The Otellos seek humans to turn them into mindless puppets named " Coded " , although the mutation fails on people from the Arks and results in free and extremely evolved hybrids called " <unk> " . 
