Ep. 1: Rising seas and the Fleet of Fog dominate the high seas in the mid-21st century
Aired on October 8, 2013

In the mid-21st century, global warming caused sea levels to rise, resulting in the loss of significant terrestrial lands for humanity. Amidst this environmental chaos, a mysterious entity known as the Fleet of Fog emerged. This fleet established control over the high seas, effectively dominating the oceans. With land lost and the seas controlled by this new power, humanity faced a bleak future. The narrative describes a world where people appeared destined to endure a slow decline and eventual extinction due to these overwhelming environmental and geopolitical shifts.
Episodes
- Ep. 1 · Rising seas and the Fleet of Fog dominate the high seas in the mid-21st century
- Ep. 2 · Gunzou faces Takao while navigating toward Yokosuka with his new command
- Ep. 3 · I-401 arrives at Yokosuka to retrieve a secret warhead amid political pressure and sudden attacks
- Ep. 4 · I-401 Evades Yokosuka Assault by Kirishima and Haruna
- Ep. 5 · Haruna and Kirishima investigate Makie Osakabe and the Vibration Warhead at Iwo Jima