Hitohiro Saito

Years before his father's death, Hitohiro took over the main work at the Founder's dojo and Shrine of Aiki, Aiki Jinja, thus relieving his aging father of the great amount of work required in running the campus. His father spent his last years taking care of the vegetable gardens and travelling abroad for seminars. The main teaching of the dojo was passed to Hitohiro's hands and remained so until 2004. In 2000, he inaugurated his own dojo, the Tanrenkan (鍛錬館), sponsored by his father Morihiro Saito. Upon his father's death, Hitohiro inherited his house and his dojo, then called the "Shin Dojo", built in 1990.

Hitohiro Saito is the founder and leader (Kaicho) of a traditional Iwama style aikido organization. It is named Iwama Shin-Shin Aiki Shuren-kai (岩間神信合氣修練会, lit. Iwama spiritual aiki drill association, abbreviated as ISSASK). It has dojo in about 20 countries.[4]

With the passing of Morihiro Saito (13 May 2002), Hitohiro Saito initially continued to govern the Founder's dojo and the Temple of Aikido, Aikijinja. He had also prepared to surrender these roles to the Aikikai, which own those properties.[5] However, the Dōshu also asked for the Iwama Ryu grading certificates to cease, and in return Hitohiro asked for the Aikikai to announce in publication that the founder's original style is preserved at Iwama.[5] The latter did not occur, and Hitohiro also came under pressures within the Iwama group.[5] In November 2003, Hitohiro separated from the Aikikai.[5] By February 2004 he had formed his own organisation (ISSASK).

While a number of Morihiro Saito's students preferred to remain affiliated with the Aikikai, others decided to follow Hitohiro Saito upon his break from the organization. Today he teaches full-time at his own Tanrenkan and travels constantly inside Japan and around the world, instructing at seminars attended by hundreds of aikido students each month.

His Aikido is known for being precise, austere and dynamic; he emphasizes aiki-jō and aiki-ken. As a teacher he is demanding, always insisting in the deep studies of the basis of Aikido as the only way to get to understand the Aikido of the Founder and of his father Morihiro Saito.

Hitohiro Sensei is also a professional chef, calligrapher, painter, and sculptor. In his atelier he carves mostly traditional Japanese masks and shishigashira (獅子頭 lion mask). His wife and children also practice daily at his dojo, and in 2016 his sons began teaching Aikido seminars internationally.

• Iwama Shin-Shin Aiki Shuren-kai