As Atton would run towards Kakashi, he sees that he had created a clone next to him. When he saw this, he quickly reaches for three shuriken and hurls them at the clone before attempting to hit the 'real' Kakashi [so if you quickly swapped places with the clone, the real one would be hit by the incoming shuriken instead]. When Atton would try to land the kick to the clone's temple, he seeming phased through it. He thought to himself, thinking how strange it was to not try to block the kick. As he is thinking this, he looks over too the "clone" to see if the shuriken had reached it's target. If the shuriken hit, Atton would realize that one is the real Kakashi and would then throw a strong punch towards his face. If Kakashi would attempt to block it, he would still figure out that he is the real one and would then leap back a few feet and take out of of his tantos.