This take on how martial arts are taught today is pretty accurate I find. That last scene with the two of them doing the same pose after tweaking a few subtle differences speaks more than the rest of the video for me since I've been a karateka for a number of years now. And although I don't really recognize any of the techniques used, I find it very beautiful to watch them fight in such synchronicity, blocking and attacking at the same time.
Given the time frame, the level of polish and aesthetics, the choice of silent interpretation is more than adequate since one is more likely than not to be one's own worse critic and that visual representation speaks volumes in how we always try to get better when doing something. I personnally would have taken a male character as the thinker and a female counterpart that tests the techniques the former has learned. But that's just me though, I think it would have challenged the status quo of women being weaker than men but this is just as beautiful either way. Now, if only that grass in the leg wasn't there at the beginning, or even in the shot, I'd say that it only needed a better quality recording to do it justice enough.