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In 2199 A.D. overpopulation has forced the human kind to adapt in other planets. For almost 100 years the human race has thrived and lived happily in their new home. However everything ended the day humans took over Pluto; to the humans unfortunately fate a new race was discovered known as the apocalypse, a creature that uses the human brain as its source of knowledge and energy for their own mechanical bodies. Now the humans must fight in order to survive. As a last resort the humans send off trained soldiers in order to reestablish Pluto and get rid of this new threat to mankind. At the base lieutenant Jonathan Tyberius and Leonard Schteinberg the main characters fall in love after many tragic events, however the two new lovers were forced to go on their own separate ways because of the dreadful war… (Source: Anime News Network)