One day, thousands of blue Rifts appeared around the planet, floating in mid-air. Curiosity engulfed everyone, as they had read countless novels and watched anime, imagining what kind of worlds might await them. They entered the Rifts, expecting adventure, only to find other countries or isolated biomes—no monsters, no special powers. Years later, a single red Rift appeared, absorbing everyone in its district. A rescue team discovered that those absorbed gained a special ability called ‘Ethereal,’ allowing them to hunt monsters. Five hundred years have passed without understanding or controlling the Rifts. Until now... These Rifts have chosen me as their... 'Rift Runner' --- On a significant day, during a Rift trial that could determine his future, the protagonist Archie received a Non-Graded ‘F’ Ethereal, the weakest rank. He learned that he was among the failures, not destined for greatness. Resigned, he went to work for his father in their noodle shop. But fate had other plans. After a fateful encounter, Archie discovered that he could control the Rifts—the very phenomenon everyone feared or misunderstood. Will the Rifts help him rise to the top, or does fate have something even more extraordinary in store for Archie that he can't escape?