Idk but in other countries it's normal for step siblings to be in a relationship or get married since they aren't really related by blood
I agree, it's all a fiction after all, even if you end up liking something in a story, it doesn't mean you will like the same in real life. Nowadays I feel peoples often mix fiction and reality too much, and think that liking something in a fiction mean that you like it in real life. If that was how life worked there's would be rapists, murderers, pedophile and whatnots everywhere, pretty much everyone have seen stories that involve at least one of those, and yet the majority or peoples are fine.
Imo the best is just to think of a story as another world and not compare it to our own.
yeah some of my favorite characters are juuzou suzuya from tokyo ghoul and ayanokoji kiyotaka from classroom of the elite. they have practically no morals and are both.. "unique" in a way where juuzou is probably insane and kiyo disregards morals. they both probably have no idea what real emotions are like because of the way grew up. does that mean i think insane people should be allowed to wander the streets? no. i love reading about them because of their uniqueness and it ends at that.
btw i agree with you and this isnt a necessary reply im just happy to talk with someone about this lol
honestly if this happened irl and some step-siblings told me they wanted to get married there's no way id support that. the only way it'd be okay is if their parents got divorced. anyways since this is a manhwa i dont give a fuck about morals~ i mean come on we always excuse the male leads being murderers. what's them being step-siblings by law compared to that??