No Game, No Life: Zero

Six thousand years before Sora and Shiro's time in Disboard, the world was engulfed in a devastating war that shattered the skies, destroyed stars, and endangered humanity's survival. In this turbulent era, a young man named Riku emerges as a leader determined to guide humanity toward a hopeful future. During his journey, he encounters Schwi, a female android known as an "Ex Machina" who has been exiled from her kind. Found among the ruins of an Elf city, Schwi asks Riku to help her understand what it means to have a human heart.