is a historical tradition of ninjutsu known as the "School of the Hidden Door", allegedly founded during the Oho period (1161–1162) by ( ), who learned his original fighting techniques from a Chinese monk named Kain Dōshi. However, the history and early lineage of Togakure-ryū may be impossible to verify due to the antiquity of the time period and its claimed historicity has been disputed by Watatani Kiyoshi, writer for the Bugei Ryūha Daijiten. After Togakure, the title of Sōke (head of school) was recorded by Toda Shinryuken Masamitsu to have been passed down through other practitioners that kept the style secret from the outside world. Toshitsugu Takamatsu is the recorded 33rd Sōke of this school. According to Bujinkan sources he became well known throughout China and Japan for his martial arts prowess and his knowledge from studying ninjutsu that he then imparted on various Chinese nobles. Takamatsu passed the title of Sōke to Masaaki Hatsumi, the recorded 34th Sōke; it was Hatsumi who largely brought the style to public attention, and subsequently resulted in wide-scale media and public attention given to ninja and ninjutsu in the Western world. Hatsumi recently passed on the school to Takumi Tsutsui. The style of Togakure-ryū has been described by its practitioners as having less-restrictive training regimens, which encourage individual personal training. One of the main goals of the training is to develop shin shin shingan () so that they can learn to properly know their opponents and defend themselves. The Bugei Ryūha Daijiten has claimed that embellishments were made to the history of the Togakure-ryu, changing the age of things to make the school appear older than it is. This was not uncommon in many Japanese lineages. History According to Bujinkan researcher Glenn Morris, Togakure-ryu originated in the Mie Prefecture with its creator, Daisuke Nishina. Morris explains that it was started in 1162, as a way of fighting in the war between the Genji and Heike (Taira) clans. The style itself would go on to be known as the origin of ninjutsu and its various fighting styles. Nishina was a samurai and a member of the Genji clan, which had been staging a revolt against the Heike clan because of their oppression against the Genji people. The revolt, however, was crushed and Nishina fled his home village of Togakure in Shinano Province to save his children. Hatsumi Masaaki indicates that Nishina then changed