Said to have been founded by a monk named Un-Ryu Ninjutsu (Cloud Dragon) this ryu has close links with Kuki Shinden ryu after a contest between the two schools took place in 1672. It was realised that the Kukishinden Ryu Ninjutsu was superior in the stick fighting arts, but that the unarmed combat techniques of the Takagi Toshin Ryu Ninjutsu was in its own turn superior. So the schools adopted techniques from each other to improve the quality for future generations. Takakage Matsutaro Ishitani was also a soke of this ryu and it is through Takamatsu Sensei and Hatsumi Sensei that many of the throwing and locking tactics are handed down. Most of the other remaining ninjutsu schools were wiped out by Oda Nobunaaga in 1591 when the men, women and children of the Iga mountains were slaughtered by a force out numbering them 10 to one. Of those few families to survive all forgot or put aside their training in the many years of peace that followed. Leaving Masaaki Hatsumi as the only surviving grandmaster. The only person acknowledged as an authentic soke in ninjutsu by the Japanese authorities.
Learning is acquired by the student; his teacher can only lead him to the door.