In the year 2130, following the third world war, vast contaminated zones dubbed "Blackspots" emerged across Japan. Massive walls were erected to isolate these "Blackspots". Over time, indications of habitation surfaced within these wastelands. From among the survivors abandoned inside the Blackspots—branded as "those who were unneeded"—arose individuals with uncanny abilities: fire, wind, brute strength... They were defined by their supernatural powers. Others, terrified of these abilities, cast them out and named them --- Needless!