🍥 detail

High School Fleet

In a future where rising seas have turned Japan into a network of coastal metropolises, the nation’s defense relies on elite all‑female naval units known as the Blue Mermaids. At Yokosuka Girls' Marine High School, former classmates Akeno and Moeka reunite alongside other aspiring cadets, each dreaming of steering their own warships on the open ocean.

The series follows Akeno’s first command of the destroyer Harekaze, blending light‑hearted camaraderie with high‑stakes naval drills. When mechanical failures strand their vessel, the crew must rally their wits and teamwork to survive, offering a spirited mix of action, humor, and slice‑of‑life moments that highlight youthful ambition on the high seas.