Guy trains hard with lions, becomes a lion! Becomes so good he can do it by being soft and using minimum effort. Teaches this soft lamb way to all his students because its obviously superior. None of the new lamb students really get it. The founder dies. The lamb students soon realise that nobody has it and go back to find what the founder did originally to get that good.
It turns out it was to train hard like a lion, with other lions!
Isn’t that the way of all martial arts?