The enemy of the enemy was his friend. That was their mutual understanding. Neither of them liked it.

For Daniel, Johnny was the one to blame. He was the one who invited Kreese back. He was the reason Kreese was attacking him and his students at Miyagi-Do. The least Johnny could do was help right his mistake.

Johnny took his digs, he tolerated LaRusso's snide comments. But how he was supposed to feel about scheming with LaRusso to fight his own dojo? Was he supposed to feel good, knowing what was going to happen to his kids if they lost?