The society of this world is divided into two halves: ordinary people and sorcerers with curses. Curses are hostile creatures that have formed from people's negative emotions. Sorcerers are fighting against them, who study and use cursed energy, techniques and weapons. The power of sorcerers is divided into ranks: fourth, third, second, pre-first, first, special. There are also three strongest clans: the Gojo Clan, the Zenin Clan, and the Kamo Clan.