Sad News for Okinawa martial arts. Hichiya Yoshio (比知屋 義夫), an Okinawa culture treasure and one of the most respected OGKK Sensei passed away yesterday, July 24 2017. #HichiyaYoshio, 10th dan, Honorary Chairman of OGKK, may you rest In peace. Our condolences to his family and the OGKK organization.