irrc Edwin's parents think leila had out of wedlock children and Edwin threatened leila to marry him. (altho two looks like edwin and only one looks like leila lol)
Leila's brothers think both of them had out of wedlock children and decided to marry each other
Outsiders think the children are adopted
For marriage Edwin had the king agreed for their marriage officialized in exchange for his military achievements
Some facts might be wrong since it was a while ago that I read the novels ㅋㅋ
Ok that's convoluted LMAOOO but yeah having wedlock children each excuse kinda makes sense lol (but that means they think these 2 gays just having prolonged honeymoon together in that villa & even thinking about dealing with the offspring problem through help from some random surrogate women ( ̄∇ ̄")). And maybe they won't explain it with this much detail in the manhwa too (like I heard Edwin's FAR more black flag there than the manhwa, haha) so we'll just see and enjoy it, lol!
Ennead is based on Egyptian gods myth right so incest is expected and well gods have diferent morality than humans I guess... I think it's what happens here too, like, Edwin's so freaky and obsessive because he's literally not human and just pretends to be, and those kids are also half-monster, so yeah the morality question is an interesting plot point tbh
The person that was very upset when they found out was their sister lmaoo
the novel name is "Beast Nature" it was more about umm the three kids' struggle with balancing their human side and beast side.
The sister wants to be human and wants to look human. Shes also very popular at school.
The youngest brother (the top) is very much in tune with his beast side.
The middle brother (the bottom) is kinda in between.
it was bittersweet when the three siblings made up and decided to understand each other

They got three babies; two boys one girl and the sequel is about the two brothers lol
its incest