

Seasons and episodes
1
Season 1 October 08, 2013
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1 - 1Those with Shipping Routes October 08, 2013
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1 - 2Into the Storm October 15, 2013
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1 - 3The Fortress Port of Yokosuka October 22, 2013
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1 - 4Assault on Yokosuka October 29, 2013
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1 - 5Not Human November 05, 2013
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1 - 6Friend November 12, 2013
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1 - 7Iwoto November 19, 2013
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1 - 8House of Dolls November 26, 2013
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1 - 9Desperate Escape December 03, 2013
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1 - 10Devotion of Self December 10, 2013
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1 - 11Sisters December 17, 2013
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1 - 12The Power to Open a Path December 24, 2013
Overview
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.