Awkward moment... Well, it was pretty subtle cuz you didn´t notice it the first time. In the other hand we have seen several moments in this manwha and Tower of God when the author trolls the readers about the gender of the characters. You don´t see that much in western comics.
ah yeah, I wouldn't have even a guess as compared to Western comics (or what, they call them "graphic novels" these days don't they?)...........my experience with Western comics (other than the funny pages in the newspaper of course) probably ended with spider man and that around 35 years ago
And yeah, I agree it was subtle and not at all "serious"............just more of a joke I guess. And sure, the Korean authors seem to just looooove androgynous/ambiguous gender characters...........but any hints or actual homosexuality, either serious or "just jokes"? Very rare in my experience with Korean manhwa, either traditional printed or online webtoons. I've always assumed it was just one of those "cultural" type differences between Korea and Japan...........for the most part the Japanese authors don't have a problem with it, the Korean seem like they probably do.
Of course I might be being unfair or just plain wrong too, after all there's an awful lot more scanlated Japanese works to see as compared to Korean.