Much of the Shinja Clan's history is shrouded under the viel of myth vs history. According to what little is known, it is believed that their Kekkei Genkai is a descendant of Rikudo Sennin's own "eyes". Originally, the Shinja were occupants of the Land of Wind and members of Sunagakure's militant forces. During the Third Shinobi World War, they were assigned frontline positions, resulting in the near eradication of the entire clan. Near the closing years of the war, Nyx Shinja and Anguish Kagetsuchi's son, Zecht was born. Apparently, he was the youngest of a set of twins, but she perished shortly after entering the world. Due to complications following his birth, Nyx too was taken into the great void and the clan was left in the hands of her brother.