The real world we live in is slowly being eroded by a high-dimensional existence called "rules". "Rules" penetrate into daily scenes in the form of strange stories - elevators, subway stations, hospital corridors - any space marked by rules will become a "uncanny realm". In the strange realm, humans must abide by the strange rules that suddenly appear, and those who violate them will be "contaminated."
Anyone with a pollution value of 100% will become part of the rules and disappear forever.
