"Now, let's see if you still follow your damn rules." muttered King Leon as the whole area trembled.
As a King, Leon Heart also knew the importance of rules and law. He even emphasizes rules and regulations most of the time. However, he also knows and is closely familiar with the unwritten law in the world.
'Never provoke someone more powerful than you.' There are many reasons why this rule is followed by many people. One of the biggest reasons is the strong ones could annihilate the weaker before they could do anything.
Even if someone could protect them, they would be passive and live in fear. It also often implicates others and complicates things, like in Angus' current situation. Therefore, if the people are not strong enough, they should never provoke others.