The conclusion of this arc in regards to Eunyung reminds me of that arc where Haejoon remembers about the nuna that was his neighbor (and childhood friend?) and that her parents made her to stop seeing him due to the rumors about his mom. Especially when they see each other again after so many years... and things didn't hit with them since they changed a lot, and... and they simply didn't reconnect at all. I mean, in a sense, the whole thing with Eunyung in this chapter reminded me of that. I was half sure Eunyung would have said/done smth else to that dude, but, I think this also shows how he has been growing up as a person, and cutting out toxic ppl from your life sometimes doesn't have to be a "big" thing for a conclusion, either.
Haejoon also made the right call here about cutting contact with his biological father, and while I am partially curious about what was his whole intention here... it doesn't matter at the end of the day. He was okay with his mom, and he has been learning to be on his own, too. And I agree on what was said above, at least the uncle is remorseful about Haejoon and his mother... the father doesn't look like that :I .