GATE 2: Jieitai Kano Umi nite, Kaku Tatakaeri

In GATE 2: Jieitai Kano Umi nite, Kaku Tatakaeri, the focus of the anime shifts from land to sea. With the Gate to the Special Region stabilized, the Japan Maritime Self-Defense Force (JMSDF) takes center stage in diplomatic and reconnaissance missions across the new world's vast oceans.

The story follows Captain Edajima Goro and his resourceful subordinate, former chef Petty Officer Tokushima Hajime. Their peaceful survey work is abruptly interrupted when they are assigned a high-stakes rescue mission into the turbulent Blue Sea. Boarding the submarine Kitashio, they navigate treacherous waters filled with warring island nations and formidable pirates, where diplomacy and naval might are equally tested.

This new chapter expands the anime's world-building, exploring themes of naval strategy, cultural exchange, and the challenges of maintaining peace in uncharted and chaotic territory.