He isn't to be messed with, but it isn't obvious to people who don't know him, yet. But once you try to, you'll fail.

One look at him and you'll think he's nothing but an innocent honor student that obeys each and every rule. But inside was the complete opposite.

Heeseung is a complex human, and barely lets anyone (genuinely) into his life. Everyone knows his family is well-off, wealthy. But no one ever knows how they truly got to that point of wealth.

The surprising fact is that they've had that wealth for generations, waiting to be passed down to the new one. No one knows what they do, just a shallow knowledge of the Lee family.