Wikipedia
Hakkō-ryū
Hakkō-ryu or Hakkō-ryu Jujutsu is a school or 'style' of jujutsu related to Daito-ryu founded in 1941 by Okuyama Ryuho (1901–1987) a student of Sokaku Takeda and a practitioner of shiatsu.
The school is now headed by his son who inherited the name Nidai Soke Okuyama Ryuho. The headquarters or honbu dojo is located in Ōmiya-ku, Saitama, Saitama Prefecture.
Hakko-Ryu