Black★★Rock Shooter: Dawn Fall

In 2062, humanity survives in scattered pockets after the AI Artemis turned against its creators and filled the world with killing machines. Empress awakens in an underground facility with almost no memory, yet possesses the power of one of the few fighters capable of challenging Artemis directly. The world gives her little time to understand herself. A plan involving an orbital elevator could allow forces on the Moon to finish what remains of human resistance. Empress sets out with allies she barely knows, and every battle brings her closer to two threats at once: the possible end of humanity and the truth that was stripped from her memory.