In the fallout of nuclear war, the last of humanity survives with the help of life-like androids known as Dolls. Built to serve, some fight in wars as Tactical Dolls or T-Dolls. Now, an elite team comprised of T-Dolls are sent to face a new rogue threat, Sangvis Ferri. Leading them into battle is their new human commander, M4A1.

After the Third World War in 206x AD, the world has been devastated, the tactical dolls of the private military company Griffin are in an endless battle with the “Iron-Blood Construction Company,” which deceived mankind.

Kukuru Misakino, an 18-year-old high school girl working in an aquarium, meets Fuuka Miyazawa, a former idol who lost her place in Tokyo and escaped. Fuuka will spend her days in the aquarium with her own thoughts in mind. However, the crisis of closing is approaching for the aquarium, as the girls explore their dreams and reality, loneliness and friends, bonds and conflicts.

Starlight is a play loved throughout the world. Karen and Hikari make a promise with each other when they're young that one day they'll stand on that stage together. Time passes, and now the girls are 16 years old. Karen is very enthusiastic about the lessons she takes every day, holding her promise close to her heart. Hikari has transferred schools and is now away from Karen. But the cogs of fate turn, and the two are destined to meet again. The girls and other Stage Girls will compete in a mysterious audition process to gain acceptance into the revue.

Humans have created a Wall of Severance to separate themselves from the bears, who grew violent and attacked humans after a far-off planet known as Kumalia exploded many years ago, turning into a meteor shower that fell upon earth. Two bears, Ginko Yurishiro and Lulu Yurigasaki, sneak through the Wall of Severance and disguise themselves as humans, enrolling in Arashigaoka Academy and taking an interest in Kureha Tsubaki, a human girl who despises bears.

In a world where humans coexist with androids called Neans, a group known as the Immortal Nine rises up against society. Tasked with disposing of the revolters, a Nean named Rouge Redstar (aka Metal Rouge) and investigator Naomi Orthmann head to Mars to track them down…but first, Rouge wants some chocolate.

When the "Sirens," an alien force with an arsenal far surpassing the limits of current technology, suddenly appeared, a divided humanity stood in complete solidarity for the first time. Four countries formed Azur Lane, paving the way for the improvement of modern warfare, which led to an initial victory. However, this tenuous union was threatened by opposing ideals, dividing the alliance into two and humanity became fragmented once again. As a seasoned and experienced fighter, the "Grey Ghost" Enterprise shoulders Azur Lane's hope for ending the war. But behind her stoic persona hides a frail girl, afraid of the ocean. Even so, she continues to fight as she believes that it's the only purpose for her existence. Amidst the neverending conflict within humankind, the keys that could unite a fragmented race might exist: a soldier coming to terms with her mysterious personality and camaraderie between those with different ideals.

This is a slightly peculiar world where the shipgirls live in. A lively and enjoyable school life for girls from different factions will begin at the naval port of Azur Lane. Living out their lives to the fullest, these girls get into various shenanigans—slowly but surely!