In a fractured multiverse where realities collide and chaos seeps through every rift, one boy unknowingly becomes the key to universal balance. Ren Ishida, an ordinary full-time worker, begins to experience visions and strange occurrences—until he comes face-to-face with his doppelgänger from another dimension, intent on erasing him.

As the barriers between worlds begin to crumble, Ren discovers the existence of the Aetherium Core, a mysterious device linked to every dimension, capable of bending time, rewriting fate, and collapsing entire realities. Hunted across realms of elves, demons, and celestial beings, Ren must piece together the truth: he is one of many versions of himself, each destined to face an evil force corrupting the multiverse.

Guided by enigmatic allies and tormented by his failures in other dimensions, Ren learns that true salvation may come only at the cost of his own existence. With the Lucent Eye, a remnant of an ancient power, and a flickering hope left in his core, he must embrace the ultimate sacrifice—knowing he may die again and again—until he finds the one path that ends the drift.

But time is running out. The final battle is coming….