#parkchet

We knew from episode 1 that he gets his disdain and hatred of Pheem and Risa as "mistress's children" from his mom along with what looks like a pathological need for control. We know that when he's high he relives his mother saying he has to take control of Thanavej Hospital, something that he clearly feels is a terrible burden forever just out of reach.

But in episode 5, there's an almost side-by-side comparison of the way both Chet and his father have explosive tempers and a tendency for violent outbursts. This tells us that Chet is merely exhibiting learned behaviour because that's what he's seen growing up.

It's why Chet cannot seem to control himself, why he has to storm after Pheem to scream in his face, or burst into Risa's office to demand to see documents, and yet at the same time cannot help but insult her to her face. He cannot control himself because he's an unstable cocktail of the worse traits of both parents, constantly on the brink of a nervous breakdown.

And not to be that person with shipper glasses, but it's probably is only because of Park that he hasn't self destructed yet. Park is literally keeping Chet from shattering under the pressure of his father's expectations and his mother's megalomanic teachings.