and Tohei were fueled with the death of Morihei Ueshiba in 1969. His son Kisshomaru Ueshiba inherited the title of Doshu. At the time of Ueshiba's death, Tohei was chief instructor of the Hombu Dojo, the headquarters of Aikikai, a title he retained until his official split from Aikikai in 1974. One of the major causes of the conflict arose from Tohei's emphasis on his principle of ki in aikido. Tohei wanted aikido to focus on these principles, using exercises to both cultivate and test ki in the daily aikido practice. He had already started teaching his new ideas during his own training sessions at Hombu dojo, but the majority of the other instructors would not. There were some who agreed with Tohei's approach, but Tohei's actions were not welcomed by Kisshomaru and most of the senior instructors. They strongly encouraged him not to teach his principles and techniques in the Hombu Dojo. Tohei replied that he had the right to teach it outside Hombu Dojo, which he did. But the tensions remained among the senior cadre of instructors, who still did not approve of Tohei's focus upon ki. These brewing tensions together with Tohei's general dissatisfaction with the situation culminated in 1971 when he created the Ki No Kenkyukai, with the purpose of promoting the development and cultivation of ki inside aikido, but outside the Aikikai "umbrella". The years of conflict finally cemented Tohei's decision to break away from the Aikikai and teach his own 'ki' style of aikido. On 1 May 1974, Koichi Tohei officially left the Aikikai organization to concentrate on his newly created Ki-aikido and Ki-society. On 15 May 1974, Tohei sent a letter in English and Japanese to the majority of the dojos both in Japan and abroad, explaining his reasons for the breakaway and his plans involving Ki-aikido and the Ki-society. This breakup came as a shock to many aikidoka throughout the dojos of the world. Tohei was well regarded by many instructors and students. He was seen as the foremost sensei of Aikido after Ueshiba's death. This, in turn, led to several dojos breaking with the Aikikai and joining Tohei in his new style. Tohei's new objective was to coordinate all the dojos who joined him and incorporate them into the organization of Shin Shin Toitsu Aikido: "Aikido with Mind and Body Coordinated". This branch of aikido is still active today even though