The Gray Tide Above the Gray Sky

A citywide shared nightmare jolts everyone in Weijin City awake at the same moment. The details of the dream are coming true in reality, frame by frame. An entity without physical form—the 'Gray Tide'—is invading from the dream: it doesn't kill, only reads memories; after reading a person, their memories rewind to the starting point, their identity completely overwritten, leaving them as empty shells. The authorities cover it up as a 'military exercise.' The Gray Tide's most terrifying aspect isn't its power, but that it 'understands you better than you do': it can read a person's entire past, yet fails to grasp truths that need no reason. Thus, Lin Jie, who lives concretely and is naturally immune; Jiang Xiao, awakened by emotions; and Su Hang, whose pure logic proves to be a losing strategy, together piece together the answer to resist—humanity's final weapon is not guns, but life itself: a bowl of soy milk, five yuan owed, three missed calls. As the 72-hour countdown reaches its end, the only solution is a blank page—something that can read everything cannot read what has never happened. But when the Gray Tide is repelled back into the rift and the world seems to return to normal, the timestamp of awakening stops seven years ago. — Description from novelcodex.org