Description:

By 2039, global warming had caused sea levels to rise and large amount of territory to be lost. As though in response, a mysterious group of warships clad in mist, "the Fleet of Mist," appeared in every corner of the ocean, and began attacking human ships. In spite of humanity mustering all their strength, they were utterly defeated by the Mist's overwhelming force. All of humanity's trade routes were blockaded by the Fleet of Mist, their political economy was destroyed, and the human race was steadily beaten down. Seven years later, the Fleet of Mist's submarine I-401 appears before cadet Gunzo Chihaya. The humanoid life form that pilots the sub, who should be their enemy, is instead offering her services to mankind. (Source: ANN)

Description:

Mars is now almost entirely covered in water. Humanity exists in large city-ships that float through the open seas. But life is hard for those who live on Mars—the economy is in bad shape, work is scarce, and food is expensive and highly prized. Gram and his friends try to do the best they can, but the work keeps drying up. Some have taken to a life of piracy to combat the corruption in the government; one such group is the pirates of the feared Ship of Aurora. And the Earth government, which rules Mars, has dispatched a new team of military pilots to combat them. In their specialized mecha called Round Bucklers, they must make the seas of Mars safe for humanity. Caught in the wrong place at the wrong time, Gram finds himself on the run with the most notorious pirates on Mars. But here's the thing—he's starting to like them! (Source: Bandai Entertainment)

Description:

The catastrophe, "Hammer of Eden," resulted in the loss of six billion lives and the flooding of 90% of the land. The New United Nations were formed to pursue peace on the ruined lands 14 years later. Keel is a boy living in a town called Yabitsu, an area which prospered due to the energy from the nuclear generator brought by the catastrophe. His next kin, Aoi, is the secretary general of the New United Nations. She views the catastrophe as an opportunity to create a new world in which nations can help one another overcome differences in races and religions. However, her efforts to realise that vision fail because of the unwillingness of the nations to change. Gould, a military officer, feels that the only way to make an order is through the military. Using Ulysses, a nuclear submarine, along with his crew, including Keel's brother Tean, Gould carries out a coup to declare war against the New United Nations in his attack on Yabitsu. (Source: ANN)