In the twilight of humanity, the Earth is a barren desert where steel ruins pierce the sky, and life is a relic. Two children, Nano and Kael, are the only survivors in this metallic graveyard, foraging among the bones of an extinct civilization. Their sole connection to the past is the 'Stellrator', an ancient device that not only provides their life support but also holds a flickering record of a world that once was—a world of vast oceans, vibrant cities, and a country called Japan. When a celestial catastrophe shatters the Stellrator, Nano and Kael must embark on a treacherous journey to find a mythical 'core' before their oxygen runs out. Their quest leads them through sunken harbors and forgotten cities, guided only by starlight and their unwavering hope for a future that seems impossible.
In the twilight of humanity, the Earth is a barren desert where steel ruins pierce the sky, and life is a relic. Two children, Nano and Kael, are the only survivors in this metallic graveyard, foraging among the bones of an extinct civilization. Their sole connection to the past is the 'Stellrato...