EDIT: Just realized it happened in Sepia toned Panel with Park's Chair behind, it means all this was her fantasy. Too Bad!!!
It's important to remember, at least in this version, that our boy's a straight up good natured guy who wants to be liked by and be friends with girls, but they're always in a state of awe or transcendent lust around him. He'll smile, wave, and say hello to someone and that girl will
fucking die but as far as he can tell, she just ignored him. Nobody's told him that they like him, aside from maybe his family. Which he's treated as, well... of course my family loves me. They're my mother and sisters. He's so guilty about being attracted to them he's constantly donating sperm so his mind is clearer.
So basically anytime you see anything that makes it feel like he's a dense MC, it's gonna be a joke. His density is more related to failing to understand that every woman who encounters him is so utterly blown away by him that they retreat into delusion. An understandably difficult to imagine thing.