the black hat that he is wearing is the king’s hat.
Officially called 익선관 (Winged Honorable Crown), this hat symbolizes the dignity of the King who reins over Korea. Meaning, GD is the King in this picture.
However, titling that hat signifies complete disregard of honor as a King, since symmetry is regarded highly in Ancient Korea; such notion of dishonor is furthered by GD’s long streak of hair falling by the left side. As a king, having “untidy” hair is horrendously offensive, especially when hair (also symbolizing “respect towards parents”) is shown on the left [left to us, facing him] (the side of evil). His stomach is also revealed, which is unheard of among the Korean Kings, as showing any skin as a King is abominable. And as a King, doing anything that is out of line with the tradition is wrong, because the citizens of a country is said to follow the King’s example at all times.
It seems like GD is set to throw off all his responsibilities as a king, doesnt it?
but there are more to notice. Notice the throne made out of ice, notice the chains binding him to that seat, notice the lines on the walls gathering attention to the center, where GD is. He doesn’t want to be there; he doesn’t want to be trapped in a throne of ice, where everyone looks at him and and forces him to be the “example” to the citizens that he never claimed nor wanted to be. He is at the center of attention at all times. All he wants to do is break free of that chain, of those judgments, and show his own style and showcase his music. He wants to do what has never been done before—reveal his hair, reveal his skin, sit with untidy clothes—but he can’t.
He can’t. Because he is the King—he is THE “idol” that must act the way it is acceptable for everyone, because he has somehow, unwillingly, become the “role model.” And he hates that.
At least, that’s what I got from this picture.