 In 1964, Sensei Zenryo received his 10th Dan black belt from the All Okinawan Karate-do Federation.After his untimely death in 1969, his son Hanshi Zenpo Shimabukuro succeeded him as the head of Seibukan karate-do.Hanshi Zenpo Shimabukuro (10th Dan black belt) was born in Chatan, Okinawa, on 11 October 1943.