People make mistakes; in this case the Prince, Erik, has learned that he must be passive, or the Act of Royalty may be invoked.
Every action he takes has the potential to be an Act, Law, or Word; all of these have long reaching and possibly disastrous results, so he has learned to be passive in most cases... which isnt good, but he is in High School, which is his final chance to make mistakes, before people die due to his errors.
And he makes them, bit they are rather small mistakes, that are made worse by some random girl making all manner of assumption.
Imagine if you went up and hugged a world leader out of nowhere! Never met you before, and you just run up with "Hey, Bob" and slap them on the back... and you die from all the bullets, right?
And this chick, Aini, is doing exactly that, even after being told not to do it!
She's lucky to be alive!
And people whining about "da prince bees meen to her! Whaaahhh!"
What are you people? 12-year-olds?