was the 5th generation Sà Âke of Negishi-ryà «, a classical Japanese warrior tradition and the nation's last surviving specialist school of Shurikenjutsu. From 1997 to 2014 (17 years), Saità  served as the elected Chairman of the Nihon Kobudà  Shinkà Âkai (est. 1935), Japan's oldest classical martial arts association. In addition, Saità  was the 6th generation head of Shirai-ryà « shurikenjutsu and the 15th Sà Âke of Kuwana Han-den Yamamoto-ryà « Iaijutsu. In 1992, Saità  was awarded the Imperial Order of the Sacred Treasure.
Born in Tokyo's Minato Ward on March 24, 1922, Saità  Satoshi was one of four siblings. At the age of eighteen he enrolled at the law faculty of Tokyo's Keio University. Whilst at Keio, he began the study of karate under Funakoshi Gichin, the attributed father of modern-day karate-dà Â. In 1941, at the age of 19, Saità  began his training in shurikenjutsu under the instruction of Naruse Kanji, headmaster of the Negishi-ryà « tradition. In 1943, Saità  was drafted into the military. When Naruse heard that Saità  would be heading off to war, he had the blade of his most treasured katana fitted to the body of a military issued guntà Â. Saità  was instructed to carry it bravely into battle. During his service, Saità  attained the rank of second lieutenant, receiving training as both an artillery officer and an aircraft navigator. During his military service, he made regular visits to the dà Âjà  of Miyawaki Tà Âru, master of Chuya-ha Itto-ryà « and Shirai-ryà « Shurikenjutsu. For many years, Naruse had been working toward the resurrection of Shirai-ryà «, which many believed to have died-out. At Naruse's request, Saità  compiled valuable technical and historical information concerning the tradition. Eventually, however, both Miyawaki and his Shizuoka-based dà Âjà  fell victim to a strategic bombing campaign, which had been targeting the armament factories and airfields in Hamamatsu. During this period, Naruse Kanji had written to Saità  Satoshi and expressed his wish for him to succeed him as headmaster of both the Negishi-ryà « and Yamamoto-ryà « traditions.
After the war drew to a close in late 1945, Saità  returned to studies at Keio University. He supported himself financially by working several part-time jobs. Nuruse's health was deteriorating by this stage, but Saità  paid regular visits leading up to his death. Professionally, Saità  worked as a civil servant for the city of Tokyo. He served at various ministries, and specialized in the field of statistics. He also worked as chief of staff at Tokyo Metropolitan University and lectured at the Faculty of Economics. He was also a senior adviser to the National Federation of Statistical Associations in Japan. In 1983, he received the Ouchi Prize, in honor of his contribution to the field of statistics. For seventy years, Saità  Satoshi had been a devoted researcher and collector of all things related to Japan's militaristic past. His personal collection of weapons, books, scrolls, historical documents and antiques was overwhelmingly extensive. In 1949, Saità  became a friend and student of Fujita Seiko, commonly known as the last Kà Âga Ninja. In 1954, Saità  Satoshi brought Negishi-ryà « back to the public eye when he demonstrated the art at the first postwar Japanese Martial Arts Exposition, held at the Tokyo Taikukan in Sendagaya ward. The aftermath of World War 2 and the subsequent banning of all martial arts by the Allied Occupation Forces meant that many classical martial arts were now facing possible extinction. This monumental event, which was sponsored by the Life Extension Society, is said to have attracted an audience of over 15,000. It was at this event that Saità  Satoshi first met and became friends with Gà Âzà  Shioda, founder of the Yà Âshinkan School of Aikidà Â. Between the years of 1957 and 1994, Saità  made regular TV appearances on NHK, TBS (Japan), TV Asahi, TV Tokyo and Tokai TV. He was also called upon to choreograph fight scenes for period dramas and films. During this period, Saità  became friends with Nawa Yumio of the Masaki-ryà «, and later instructed him in the art of shurikenjutsu (Nawa had also studied under Maeda Isamu, 4th generation Sà Âke of Negishi-ryà «). In 1992, Saità  Satoshi was awarded the Imperial Order of the Sacred Treasure. After his retirement, Saità  dedicated his life exclusively to the study and preservation of classical Japanese warrior traditions. From 1997 until his death in 2014, he served as chairman (ä¼Âé·) of the Nihon Kobudà  Shinkà Âkai (æ¥挤æ¦éÂÂæ¯èÂÂä¼Â), Japan's oldest and most illustrious kobudo organisation (est. 1935). He was also a long-term director of the Nihon Kobudà  Kyà Âkai (æ¥挤æ¦éÂÂÃ¥ÂÂä¼Â). On 16 March 2014, Saità  Satoshi attended a plum-blossom festival with one of his senior students, David Barber, head of the Kamakura branch. After returning home that same evening, he died in his sleep; his death was attributed to old age.
The Negishi school of shurikenjutsu is a classical Japanese martial art (Koryà «) founded by samurai, Negishi Shà Ârei in the mid 1850s. Its distant roots can be traced back to the Sendai region's Katori Shinkon-ryà « (divine soul school), an offshoot of Tenshin Shà Âden Katori Shintà Â-ryà « (divine way school) originating in Chiba prefecture, Japan. A master of the Katori Shinkon-ryà «, Matsubayashi Samanotsuke Nagayoshi, aka "Henyasai" (the bat), later founded his own school of sà Âgà  bujutsu in 1644 and named it Ganritsu-ryà «. Ganritsu-ryà « spread throughout the Tohoku region, and was handed down within the Katà Âno family for generations. Date Yoshikuni, the 13th generation lord of the Sendai domain, received the art from the Katà Ânos. Due to their light weight and concealability, Lord Date insisted that women within his household be trained in the art, as a method of self-defense. Date's wife, Tokugawa Takako, daughter of Tokugawa Nariaki (aka, Mito Rekko), Lord of the Mito territory, developed a high level of skill in the art. At her father's request, Takako passed the art on to Kaiho Hanpei, the official sword instructor for the Mito territory. As a child, Kaiho Hanpei enrolled as a disciple of Negishi Tsunemasa, master of Araki-ryà « in the Annaka Domain. After Tsunemasa's death, he continued his studies under his son, Negishi Sentoku, the 3rd generation master of the school. In 1849, Negishi Sentoku asked Kaiho to instruct his 16-year-old son, Shà Ârei, in the arts of Hokushin Ittà Â-ryà « and Ganritsu-ryà «. Within a few years, Negishi Nobunori Shà Ârei became Kaiho's most skilled student. Having perfected and refined his skill in shuriken-jutsu, Shà Ârei felt the need to develop a new breed of shuriken-jutsu. His aim was to create a school that focused exclusively on shuriken combat. This gave birth to Negishi-ryà «. The school uses the jiki-dahà  (direct flight) throwing method (unique to Japan) and incorporates the use of weapons, such as the sword.
The Shirai school of shurikenjutsu is a classical Japanese martial art (koryà «) founded by samurai, Shirai Tà Âru in the early 1800s. The school uses long, needle-like darts, which can be thrown using the jiki-dahà  (direct flight) or hanten-dahà  (half-spin) methods. Used in conjunction with weapons, such as the sword and shubà Â, Shirai-ryà « shurikenjutsu is a powerful and devastating system of traditional Japanese combat.
Handed down within the Naruse family for generations, Yamamoto-ryà « Iaijutsu was founded by Yamamoto Jikensai, brother of Yamamoto Kansuke. The school consists largely of iaijutsu, as the name suggests, but also includes a short kenjutsu & jujutsu curriculum.
Training under the guidance of Fujita Seiko from 1949 onward, Saito Satoshi received instruction in Shingetsu-ryà « Shurikenjutsu.
During his lifetime, Saito Satoshi only accepted a small number of students, which he trained privately at his home dojo in Tokyo. Only four were awarded teaching licenses. Upon the retirement of Yoshimi Tomabechi, Yoshifumi Hayasaka (Shihan) was appointed the 7th Generation SÃ Âke, and David Barber (Shihan) was appointed director in charge of Negishi Ryu International.