Translated from Pertti Ruha’s Blog HERE.
In the mythology of the schools of the Bujinkan, there exist a person called Kiichi Hogen [鬼一法眼] (also sometimes romanized as Kiitsu Hogan) as mentioned in Takagi Yoshin Ryu’s Ryuko no maki. He is a legendary figure, who we do not know much about. Hogan lived in the 1100s in the areas around Kyoto.
He is said to have been skilled in onmyojutsu (陰陽道) a form of Japanese Taoism — and was a famous strategist.
Among the documents that are left behind after the “Kyoto’s eight schools,” Kyo Hachi Ryu, mentioned him as a prominent figure, whose teachings have been embraced among many of the martial arts schools that came from western Japan. Among other things, he must have left behind the piece of text included in Ryuko no maki;
“If the opponent comes, welcome it; if he goes so send him away. Add five to five and to receive ten; add two to eight, and to receive ten. How to create harmony.
Assess the situation, see through the intention; the large larger one ten square feet; the little penetrates the smallest things.
It can get hectic, but when you face whatever is in front of you, keep a cool head. “
According to a book from the early Edo period this was most like Chujo ryu. The tachi used was short and a characteristic technique was to squeeze close to the opponent.
The brief description of the sword he used is similar to our Togakure ryu sword and the techniques of Kasumi, Fuma and Aranami with movements that oshi kiri and Raikou ken etc., are extremely similar.
A temporal link with the Togakure Ryu is also a legend that Hogan was Minamoto Yoshitsune’s sword teachers, the same Minamoto Daisuke Nishima fought before he was forced to flee into Iga mountains.
If this connection is true, then one can also speculate that Chujo ryu, a famous but now extinct school, could have links to Togakure ryu and Gyokko ryu.