Kiichi Hogen (鬼一法眼)
He was an onmyoji (master of Yin yang) who resided at Ichijo-dori Horikawa-dori in Heian-kyo (Kyoto), and was an authority on the magical art of warfare called Rikuto-heiho. It is believed that he excelled both in academics and military art. He is well-known for the legend that Yoshitsune stole his family heirloom military book "Rikuto" in collusion with his daughter.
He is revered as the founder of Kyohachi-ryu school of swordplay and as the deity of swordplay.