Utopa

In a future where the remnants of Earth lie in ruin due to the catastrophic fallout from nuclear and biological warfare, humanity has retreated to floating cities in the sky. These sanctuaries harbor the last vestiges of life, with animals and plants that have adapted and evolved over generations, developing language and culture in their artificial environments. As the planet below succumbs to the impending sixth mass extinction, the inhabitants of these aerial realms have largely forgotten the world they left behind.

Amidst this backdrop, three curious children—Kui, Hiruma, and Root—stumble upon an unexpected treasure: a single seed from the devastated Earth. Their discovery sparks an insatiable desire to explore the forgotten land below, leading them to embark on a perilous journey. Unaware of the irreversible consequences their adventure will bring, the trio steps into a world that is both familiar and foreign, where the remnants of nature hold secrets and challenges beyond their wildest imaginations.