Kokyu is just another Internal component predetermined by all the same factors that enable asymptotic activation. The whole, which connection with the infinite is, determines the downstream details. Telling someone which details to correct can only help the person if the reasons for doing so are understood. Breathing and kiai is not something a beginner should worry too much about. It shouldn't take but a few months to get it in accord with Internal's demands. I've been experimenting with a brand new Internal action which I'm calling asymptotic attenuation that works well with heavier and larger ukes in relation to nage, and by default it creates a distinctly new kiai that I've never heard before. Not to scare anyone away but the only thing I can compare its frequency to is that of a siren call of a cougar in heat. Of course I can't come close to the cougar's duration or amplification of its attenuation.
I really have been trying to stay out of the recent back and forth stuff with our friend Tenyu, but the post above just gives such a clear clarification to Toby's 'weasel farting' tag, that I just could not leave it alone. Just what the F--- are you trying to say in that post