Prologue

The sky blazed for three days.

Not with sunset.

Not with storm.

But with fire.

Cities high above the clouds fell silent as the atmosphere turned chaotic. Oceans engulfed coastlines. Forests erupted into walls of orange flames. Satellites flickered out one by one, like fading stars.

Humanity witnessed its own extinction illuminate the horizon.

And beneath it all – far below shattered continents and boiling seas – something ancient stirred awake. Deep within the planet’s hollow core, where sunlight had not reached for eons, a sphere of golden light began to glow.

The Alder Sun. It did not rage. It did not flicker. It simply burned – steady, eternal.

A small portion of humanity ventured into the earth’s vast caverns, led by knowledge long hidden in myth. Scientists. Engineers. Children. Dreamers. They brought seeds, fragments of culture – and hope.

Above them, the upper world was tearing itself apart.

Below them, Alderian was born. They constructed cities beneath stone skies. They mined fusion crystals that pulsed like captured stars. They vowed never again to allow greed, power, or fear to govern their civilization.

They chose secrecy.

They chose balance.

They chose light without dominance. And for eons, the upper world believed its core was merely molten rock. They were mistaken.

Because deep beneath their feet, in a world warmed by a patient sun, humanity did not perish.

It was reborn.