Responses
In the early chapters, he gave the impression that he was unaware of what was happening around him, unable to even figure out how to approach Myung-il, and seemed afraid to engage in a fight. But now, he suddenly decided to kill his brother without hesitation.
I don't remember all the chats in detail, so I'm just talking about how I remember feeling about them

Oh my, I fucking this grey ass head he's such an annoying mf who pretends to be a little innocent guy but when he wants something he suddenly can use his brain?