Um so I’ll try, so the white hair/ black hair guy is the son of the first couple, and the tan guy is a guy he was friends with since is childhood but soemthing happened I think, where the white/black hair guy lost his memory. So they become boyfriends whatever and they have the deed ofc and then the tan guy becomes present with triples but everyone is saying they will die since he can’t have kids. Uh I think I answer everything about them, if you got any questions I can try to answer them

Anyone can give me a summary of season 2
As in what the deal is with hwa n the other guy