Henshuho no. 1 is a disheartening way to start the sequence of 28 self-defence moves developed by Dr. Chitose, the founder of Chito-Ryu karate. It is, arguably, the hardest of all the defences to make work.
Done traditionally, the defender ducks under the attacker’s high punch, applies a high block on the attacking arm, near the armpit, pushing the attacker back. The attacker reacts by pushing forward. The defender takes advantage of this forward momentum by grabbing behind the attacker’s shoulder and pulling him down while applying a foot sweep, for the takedown.