It is true. When this movie is about the transformation from an average fighter to the "best" in Japan, I expect a little more than that. This is because Oyama never did any soft kungfu which you see in most movies these days, He did hard taekwondo and later created kyokushin karate and he always tried to finch his opponent with one punch. Yeah, totally formulaic since this film mostly fits the basic formula, but like many films before it, it works. I didn't understand the guy at all.
nest...