Arpeggio Of Blue Steel: Ars Nova-lim.complete Col.

In a near future, the mysterious Fog Fleet appears on the world's oceans, a faction of sentient high-seas warships and submarines, declaring war on humanity for unknown reasons. Many of the ships possess their own personalities, known as Mental Models, which can take physical form as female avatars of their vessels. However, due to the Fog's superior technology, it is a highly uneven battle, and humanity must increasingly retreat. Seventeen years later, naval officer cadet Chihaya Gunzo awakens the Fog Fleet submarine I-401, and the Mental Model Iona appears. She has the surprising mission of obeying Gunzo's orders. Together, Iona, Gunzo, and his mercenary crew, the Blue Steel, take up the fight against the Fog.