In a moment of silence, the "Cancer of All Worlds" sent ripples across the vast sea of stars like a stone cast into water. In an instant, distorted and unrecognizable matter became a muddy torrent flowing into every realm. Accompanying the sludge were gems of sunlight and starlight: the Stellarons.

Everywhere a Stellaron touched fell into ruin. To the afflicted civilizations, the Stellaron is a symbol of destruction. Yet, there are those in the star-ocean who seek pearls within the murky waters. Calling themselves the "Stellaron Hunters," they traverse multiple worlds to seize these Stellarons.

Aside from their tracks, outsiders know nothing of the Stellaron Hunters. Which Aeon do they follow, and why do they seize the Stellarons? ...Among the countless rumors, the only thing the entire universe agrees upon is that while the members of the Stellaron Hunters are few, they are all exceptionally formidable.