Will you choose the power of the nobility, or the light of the world?
After the sun vanished, the world was plunged into an eternal night. Humanity survives by relying on Radiance extracted from Sun Shards, and the Nobles of Light, who monopolize the massive Sun Shards, rule the world. Meanwhile, explorers and the Sun Restoration faction, who seek to revive the sun and return light to everyone, explore the Dark Zones to collect Sun Shards.
Explorers aiming for the sun's restoration and the Nobles of Light seeking to maintain their current power and order are in constant conflict over Sun Shards. Battles and disputes surrounding Sun Shards continue throughout the world.
Long ago, the sun shattered due to a cataclysm of unknown origin and vanished from the sky.
Fragments of the sun fell all over the world, and each fragment still held powerful light and heat. People came to call these fragments Sun Shards.

After the sun vanished, the world was plunged into an eternal night. Most regions froze over or became the domain of monsters, and the surviving humans built cities around the Sun Shards.
However, as the sun disappeared, another change came to the world.
Beings born in the darkness.
Night-Stalkers

Because of this, people had to maintain the light of the sun at all costs.
But artificial lighting was meaningless.
Light made from fire, electricity, or machinery could not drive away the Night-Stalkers.
Only the true light of the sun emanating from the Sun Shards could repel the Night-Stalkers and protect humanity.
Later, humanity developed technology to extract light from the Sun Shards.
The energy produced by refining Sun Shards was called Radiance, and Radiance could be stored in special devices and crystals.
Release Date 2026.08.17 / Last Updated 2026.08.17