Arknights and the Holy Grail War

Heroic Spirits have begun appearing one after another in the world of Terra.

To them, this world is unfamiliar. And to this world, they are just as unfamiliar.

The Reunion Movement, Rhodes Island, Karlan Trade, Lungmen, Rhine Lab... Everyone is beginning to realize that this world is changing, and that it brings opportunities.

This is a war, a Holy Grail War that will decide the fate of the world.

Though no one knows what lies at the heart of this war.

Just as no one knows the true nature of Originium or how to cure Oripathy.