Black Rock Shooter: Dawn Fall - S01

In 2062, Earth is locked in a fierce war with Artemis, an AI that turned against humanity after a large-scale workforce automation project failed years earlier. Hoping to win the war, a group of three highly skilled human warriors is assembled, known as the guardians of humanity. Empress, the last surviving guardian, wakes up alone in an empty research facility. Unable to remember anything from the past except a place called "Lighthouse No. 8," she sets out to find answers. Before long, she discovers an impending threat from Artemis, and she is the only one who can save the world from destruction.