In Wado Ryu the practice of Kihon, Ohyo & Yakusoku Kumite is an essential Part of the training. What we need to understand, that in the Japanese Martial Arts there is a Different meaning to attack and defence that we in the west need to understand. The Wado terms of Torimi and Ukemi are less about antagonist and defender and more about intent.

Tori -To take

Uke - To receive

So with that in mind you have remember it is Ukemi who is counter attacked and Torimi that is the one that receives the attack to counter.

This also brings in another point, that it can be that the roles are reversed when though knowledge of intent as in Ohyo Kumite for example, the Torimi Also receives a pre-emptive counter. I am reminded of a story of 2 Samurai approaching each other from different directions. As they get closer one of the Samurai draws his sword and cuts off the others head. In the west we immediately would be up in arms saying ‘what did he do that for’. When in actual fact it was his own fault as he should have been ready. Remember that both men were wearing swords and you don’t wear a sword without intent of using it. If someone is in front of you in a fighting stance you must also assume that they have intent.