From a KK forum we read
There are many people who assume that all Kyokushin training is about punching to the body, yet their own time in a Kyokushin Dojo is minimal, and so we see the same question being asked again and again.
But you are wrong about the original kyokushin... the original kyokushin is not a sport, it is a martial art.
And the original Kyokushin as Sosai has designed it, includes punches to the face and kicks to the groin. Only for tournaments did the rules get modified. So you are wrong when you think that the current Kyokushin kumite rules are the original rules.
My own training time has seen me in Dojo in a number of countries, and without exception, punching to the face is taught and dealt with. Now, competition rules are one tiny part of Kyokushin that seem to draw the most interest.