There were Four masters in Oyama Dojo.

 

　Those four Karate masters had learned different styles at other dojos.  But they came and get together at Oyama dojo because they were so attracted by Master Oyama’s character and skills.  While joining Oyama dojo, they taught Karate as instructors, but what they taught was their own style, not Oyama Karate yet.  Therefor very beginning of Oyama Karate was so complicated, or should say “mixed up”, because of which had so many different essences from others.

 

　So-Shihan Watanabe, who was the first Shihan-dai at Oyama dojo and Kyokushi, created the style of “Oyama Karate”.   Because he was the only one who was instructed each characteristic skills and combined those essences from “Four Masters” all together.