Chikamatsu Shigenori (近松 茂矩), samurai, military writer, shinobi, and tea ceremony enthusiast, was born in Owari Province (now Aichi prefecture) in 1697. His father, Chikamatsu Shigekiyo, was a retainer of the Tokugawa clan in Owari province. Chikamatsu was best known as a writer and his output included one hundred books on military matters including the "Yokan Kajo Denmoku Kugi" the oral traditions of Iga and Koga a scroll outlining the skills and tactics of Japan's famed shinobi. Chikamatsu was known by several other names including Hikonoshin, Nankai, and Nogenshi, and Chikamatsu Hikonoshin Fujiwara Shigenori.

When he was 16 he gave a demonstration to his lord on the samurai schools of Katayam-ryu, Takanoa-ryu and Shin'nen ryu. The lord immediately promoted him to retainer and Chikamatsu left for Edo. At the age of 17 the lord died and the Owari house was passed to his son. Shigenori was subsequently demoted and put in charge of the stables and grooms at reduced pay. He then returned to Owari and studied at a dojo called Renpeido. At 18 he founded a school called Zen-ryu, later called Ichi Zen-ryu, where he taught other samurai. Chikamatsu was known as Renpeido and it was at that time when he wrote most of his books. He also started studying at Naganuma-Ryu, a prestigious school. Out of around a thousand students only ten got licences, one of them was Chikamatsu. Every morning he would go down to his dojo, dressed in a formal hakama, and prays to his altar for success in war. He would then practice the martial arts he has learned from all the schools he studied in.

When Chikamatsu returned to Owari in order to start a dojo and continue his studies he found two people. One from the line of Koka, and one from the line of Iga. The man descended from Koka was Kimura Okunosuke Fujiwara Yasutake and the man of Iga was Takenoshita Heigaku Minamoto Yorihide. Chikamatsu decided to study both of these traditions and he got full licenses from the two masters.