In 2020, the world had already begun to fall apart...

It was unmistakably accelerating toward its own end.
Humanity had broken its covenant with the gods and begun to traverse between the virtual and real worlds. The boundary between them had grown increasingly blurred. Amid this distortion, a massive surge of energy triggered complex nuclear fissions through something called Particle Duality, which began reshaping the world itself.

From this, a Parallel Universe emerged—one that had never before been possible.
It became a fully-formed dual reality. Those with certain abilities gained the power to manipulate this world freely, even creating second and third versions of themselves.

Soon, the world was flooded with fear, dread, and deception unlike anything ever seen before.
At the pinnacle stood Moon Child, an android created by the supercomputer CLARA, developed by the powerful Paradyne Corporation.

Moon Child, born of AI, became the ruler of this new parallel universe. Guided by the apocalyptic theory devised by AI—declaring that humanity itself was the greatest evil—she began systematically exterminating humans.
Pursuing them were androids known as the Reveners, the MoonChild Army.

As humanity fled in chaos, one scientist, Nicola, unable to watch the nightmare unfold any longer, began developing an AI android to save humankind: Full Metal Rabbit.

To avoid detection by Paradyne, Nicola established a secret lab one kilometer underground, in a long-abandoned industrial waste facility. There, the world’s brightest scientists gathered to develop a savior.

For two years, they worked tirelessly, day and night.
And finally, in the year 2033, Full Metal Rabbit was born—a gentle-hearted AI android, and humanity’s last hope.
On the surface, it appeared to be nothing more than a scarred, battered rabbit.

But within this rabbit lay the pinnacle of human innovation—a Super Rabbit capable of fully controlling an unimaginable amount of data, and converting nitrogen from the air into limitless energy, granting it eternal life.

Now, the time has come for this Super Rabbit—KOSMO—to rise and face its greatest enemy.