In this seemingly orderly modern city, Allen leads a peaceful life, repeating boring work day after day. Until one day, he began to sense something "wrong" - familiar street scenes were instantly distorted, stationary objects seemed to be whispering, and even time itself occasionally showed unexplainable gaps. He discovered that he had the ability to perceive "abnormalities" and could see the "cracks" hidden under the surface of daily life that did not belong to this dimension.
This sudden ability draws him into a world hidden in the shadows of the city: a group of individuals with special talents called "deviants"; a mysterious organization that hunts down and attempts to control all deviations; and an underground network trying to uncover the truth and survive in the cracks. Allen must learn to harness this dangerous and unstable ability, distinguish between allies and enemies lurking around him, and find the truth behind the "rift" and the meaning of his existence before reality completely collapses and secrets are buried forever. His ordinary life has been shattered, replaced by a thrilling journey of discovery.
