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.

大场奈奈。
圣翔音乐学园第99期生 学号15号。
中学时代孤身一人身处演剧部的她，知晓了在这所学园首次创设舞台的真正喜悦。
以同一个舞台为目标，携手共进的99期生这些同志。
落幕的瞬间沸腾的掌声，以及令身体颤抖的充实。
让那如同燃烧宝石般的光辉
让那如同闪亮彩虹般的每个幸福之日，再一次——
被那份眩目囚禁的奈奈，参加了长颈鹿主办的谜之选拔。
成为合格者的她，期盼着在命运舞台上的「第99回圣翔祭，那一年间的再演」。
「好吧」
然后再次开始的，「那一年」。
奈奈将开花结果的才能，全部投入到那眩目之日的「再演」中。
但她尚未知晓。
没有完全相同的舞台。
没有不会结束的舞台。
在重复的再演前方，旋转的轮舞开幕。
「本该是演出过的舞台。但，却是我不知道的舞台」
「那就是，轮舞·轮舞·轮舞——我明白的」

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.

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.

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.

High schoolers Mitsuha and Taki are complete strangers living separate lives. But one night, they suddenly switch places. Mitsuha wakes up in Taki’s body, and he in hers. This bizarre occurrence continues to happen randomly, and the two must adjust their lives around each other.