Omg what? Can you tell me how they are related
In the original novel they are blood-related brothers.
So both of their parents are the same? Or only half related?
Idk, I haven't read the novel, I don't have any more info other than what I've written...
This is the info I got from MangaUpdates "NOTE: In the original novel, the brothers are blood-related. This was changed to a stepbrothers relationship in the webtoon adaptation".
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Fun fact (or maybe not) - in the original novel the leads are blood-related, but this was changed for the manhwa adaptation :)