spoiler
in the drama no one really ends up, there is some sort of.. subtext between the siblings (i think one of them i adopted and the sister knows, but she doesn't tell her 'brother' that she knows), but that's it.. you just know they probably have romantic feelings but they don't talk about them
the ending actually was rather shitty for shippers because the sister tells the cosplay guy that she wants him to take good care of her brother and she never seen him good like this, and all he does is say they aren't a couple and that she really likes 'her brother'.. she says he's similair to him and she probably liked him bc of that lol, he then later tells some sad story to the brother and how his sister cares more about him than he thinks.. some drama inbetween but that's it lol.. (i think the cospla guy lost his older sister? dont really remember)
I’d love biology to be more respected
Nature makes us « incest proof », to prevent genetic impoverishment of genetic, not because we divine our blood relations, but because of whom we are raised with in the beginning of our life (it is very precisely the object of Westermark studies - Freud contemporary - that completely invalid any oedipian theory)
So basically at least the baby girl would never fall for her brother, because she was raised with him since birth, with or without blood connections.

They said that in the drama the big bro and his lil sis will end up together? Is there really a possibility? Because i love it being a yaoi manhwa honestly, i'll drop this manhwa if ever i found that this is a shoujo one, seriously. I dont know but i love big bro and mong ryong's combination theyre personality is really alike and they can be a couple they are cute together tbh