I was thinking that this arc was gonna deal with both Haejoon's and Eunyung's problems, as in their attempts to stay out of fights and get closer to respectable adulthood, but now I'm thinking it's gonna be more centered in Haejoon's big brother complex with Eunyung, if we can call it that. He's getting really pushy in his attempts to keep Eunyung from going bad, to the point that it's getting weird. You're not his actual brother, Haejoon… I wonder whether this has some crazy connection with his own traumas, like the last time they fought.