Tsuyoshi Hiroshige was born in Japan 1 November 1947. While student Bachelerato, was very good handball player. To 19 year old, began working at Honda, after passing through three other companies, until the 25 he decided that his life would be dedicated to Budo Karate, and signed up as "uchi deshi" (Internal disciple) Mas Oyama. Hiroshige began in the dojo headquarters Kyokushinkaikan, in June 1972. Three years later entered the Waka Jishi Ryo (sleeping lion pup), where he held the position of Head of Dormitory, responsible for the activities of the rest of the internal disciples. To 28 year old, began to fight in tournaments, debuting in the eighth Japan Cup. After this first competition, complemented his training with the techniques of Ikken, and the following year was ranked seventh in the ninth Japan Cup. Hiroshige continued his hard training and thus ranked fourth, Tenth in Championship, and fifth, in the Eleventh Championship. In 1979, represented Japan as a member of the team in the Second World Open Championship.

Jacques Sandulescu, "Large", had been a personal friend of Mas Oyama and his "foreign brother", since the early sixties, when they met for the first time in one of his trips to the US. Was a famous event in the manga "Karate Baka Ichidai "e, sometimes, people asked: "You fought against him?" (This is the way of the strong men become good friends). The answer is a mystery, but what we can say is that Jacques - then owner of a coffee and a jazz bar, Today author and actor - trained with Sosai six hours a day, until Dan took second .. Sosai and gave him one of his belts. Later, Sosai gave him the sixth Dan, compatible with its status as Advisor, but Jacques never used it because he continued to train with your "old" belt. Jacques helped Sosai to perform spectacular displays, presenting to the public the American force and the power of Karate. These images show how close they were lifelong. Jacques continues to train and to offer their advice to Kyokushin-Kan, while enjoying many friends karateka Kyokushin worldwide.

José Millán began his practice of Kyokushin Karate under the teachings of Sosai Mas Oyama, in April 1963, no Oyama Dojo, and was a contemporary of Hatsuo Royama. I had already practiced Judo in Spain, their homeland, having arrived, the college season, ao quinto and, this martial art. After his return to Spain, in summer 1966, He became the first person to win the black belt in Karate, that country. Unfortunately, due to the laws created by the Ministry of Spain Sports, the practice of karate was prohibited and he returned to Japan, where he lived for 40 year old.

Akio Koyama was born in Tottori region, Japan, the year 1958. With 21 he began training at the Honbu Kyokushinkaikan, in Ikebukuro. Shortly after moved to Royama Dojo Saitama, becoming the first head of the dormitory of the "uchi deshi" of Kancho Royama. After learning the essence of Budo Karate Dojo in Royama, Koyama fundou a sucursal de Sanin do Kyokushinkaikan. In December 2002, He resigned from his post in Kyokushinkaikan, along with Hatsuo Royama and Tsuyoshi Hiroshige, assisting in the creation of the Kyokushin-kan.

Hiroto Okazaki was born in April 1961, at the Fukushima region, Japan. He started practicing Karate Kyokushin at thirteen and, to finish his studies Bachelor, entered as "uchi deshi" in Royama Dojo. Trained under the supervision of Royama, while belonged to the branch of Saitama and, after learning the essence of Karate Royama, He founded the branch of Kyokushinkaikan, in Fukushima.