I know they’re biological brothers in the novel. Not that I’ve read it or anything, I just saw some comments about it when the manhwa was released. Well, it’s pretty normal for manhwa to change that kind of dynamic into a non biological relationship. They usually make them stepbrothers or adoptive siblings instead. Manhwa generally doesn’t do biological incest, though I’ve come across biological incest more often in manga. Still, when I said I wanted more, I meant I wanted more of it actually drawn in the manhwa. Reading the novel just isn’t my thing.

Too bad it end with 20 chapters, I wanna know more about these unhinged siblings relationship