Kosei Nishihira was born on the 10th of June 1942 in a small village close to Yonabaru, south of Okinawa, in Japan.

[8][9] Some external students from Japan and United States of America were also taught but without some of the techniques and training considered too dangerous for general use.

He opened a "bentoyasan" shop (lunch box caterer) in Nishihara, close to his "Sensei" Hohan Soken's house and despite his busy working days, practiced karate with commitment and passion.

His diligence and commitment led to a close relationship with his Master Soken, so much that Nishihira used to call him "Tan-mei" (little uncle).

During his life, Nishihira often had to challenge much stronger opponents who he eventually managed to overcome thanks to his Grand Master Soken's strict training.