Noriyasu Seta (瀬田 記康 Seta Noriyasu) is a Tokyo University archaeology professor who once acted as Naru Narusegawa's tutor. An exceptionally skilled martial artist and possessing near indestructibility, Seta spends a good deal of his time traveling the world on various expeditions. His goal is to find evidence of the ancient Turtle Civilization that once flourished throughout east Asia.