I really didn’t like the way Dohyun said the duckling stuff to Kang. Deciding someone else’s feelings for them is pretty condescending. And kinda manipulative even though he’s framed as an understanding guy.
At the same time, Kang is seriously obsessed, we know he’s probably ending up with her but imagine she didn’t like him and chose someone else. I wonder how he’d react and cope. Right now his whole world revolves around Irae, we never see him in scenes where he’s thinking about other stuff, whereas the other characters get that fleshing out.