"Coaching The SKU Way!" Official SKU Coaching Resource
First Published May 2013 Issue 51 SKU Quarterly Magazine
Clearing up the difference between Oyo & Bunkai
by Derick Kirkham
Ōyō-ryoku 応用力 the special use or purpose to which something is put.
Oyo suru 応用する to apply.
"Sensei demonstrated an interesting application for move 3 taken from Kata Nijushiho"
Oyo - The Application. It's often mistaken and inaccurately referred to as being Bunkai, but Oyo involves the interpretation of the Bunkai and then taking it to the next level.
The practical application of karate for self defence. By recycling the analysis of the Bunkai and utilising it to your specific needs and finding a workable application to meet those needs. That is why I have advocated for decades the use of the word implication, as I feel it defines oyo better than application, as there are millions of implied permutations of the traditional application. So that is why for the performance of traditional Karate Kata, Oyo is not an aspect that affects the performance unless one is performing Kata within a sporting environment and one has to demonstrate the Bunkai, which these days has definitely shifted towards a display of Oyo rather than the display of Bunkai.
the process of separating something into its different parts.
"It's a beneficial to isolate and disassemble the various stages of a Kata and study the possible applications for each of the individual techniques."
Bunkai when used as - The Analysis of or the deconstruction of the Kata, where one is looking for the meaning. At a Superficial level it's taken as a study of "what is the imaginary opponent doing when one is performing a certain technique within the kata. But on closer inspection it's more the whys and wherefores of each movement and each transition; the student is looking to explain to themselves what Karate is about.
Bunkai suru 分解する
the action of taking something into its different parts.
"Sensei isolated the various stages of move 3 from Kata Nijushiho."
detailed examination of the elements or structure of something.
"isolating the various stages of move 3 from Kata Nijushiho highlighted several interesting possible applications."
Good Luck and Good Practice.