"The tide of fate never rests for anyone."

Alyss, the Tide Arbiter, controlled the tides and fate, and due to her power threatening the ancient AIOS Sea's order, was sealed deep beneath the ocean. Her seal was not just a confinement but a protection to prevent her endless power from overwhelming the world.

In the mythical AIOS realm, lost between legends and myths, existed goddesses who controlled the power of the ocean. They each represented different aspects of the sea—the morning tides, the azure abyss, the dreams of coral reefs, the waves of the night... They originally guarded the balance of the world, maintaining humanity's memories and hopes of the sea.

However, tens of thousands of years ago, a sudden calamity swept through the entire AIOS realm. The goddesses' divine forms shattered, their memories broken into countless glittering fragments scattered across the corners of the sea and temporal rifts. With their divine power collapsing, the divine realm gradually spiraled out of control. If they cannot be awakened before their memories completely disappear, the ocean will sink into the abyss forever, and the world will meet its end. Once this barrier completely collapses, the entire AIOS realm will sink into the abyss, all humans will lose their connection to the ocean, and it will become a lifeless wasteland.

Until a thousand years ago, an ancient prophecy foretold—when the memory fragments return to the temple, the goddesses sleeping in the sea will awaken once more, guiding the world toward true awakening. The only power that can restart this barrier is to gather all the goddesses' memories and restore their "Primordial Divine Forms."

Help the reincarnated goddesses rebuild their shattered memories and recover their true identities. When all memories are restored, the lost 'Core of Divinity' will awaken, revealing the final truth about the AIOS realm.