i'm pretty sure they'll be overjoyed, i mean it was clearly shown that they want dojin to hook up with an omega while dojin refused and was against hooking up with an omega. now he did end up with an omega and thus his families wish came true lol
pretty sure the reason he doesnt want his family to know is bec he always refused omegas so strongly that it's hard to go to them and admit that he fell in love with one after telling them that he'll never accept an omega as a mate for years...
Yup. They want a dominant one. That's a powerful family with powerful Alpha. Dojin is the only dominant one that's why they wanted him to go with a dominant Omega. To make a baby dominant again. I think that's their logic. And that's why Dojin doesn't want Hye to be implied for now, he knows that most of them are gonna hurt him and probably will do everything they can to make him run away from Dojin.
Well that's what WE think, but you know his family seems to be interested in power more than anything so since Dojin is the only dominant one, he needs to be with a dominant Omega. That's why he hated Omega, because his family wanted him to be with a dominant one. But he fell in love with the opposite.
i think it's way more than a difference in pheromone; every human has two sets of genes one is recessive and one is dominant and the dominant one is always active while the recessive genes tend to be inactive which would also explain why he never got his heat until he met doujin - his omega genes were inactive and dojins alpha pheromones activated them somehow...

I think the next chapter (32) will be the last chapter for this season until season 2 ╥﹏╥. I hope we get to explore more about Dojin family next season because even though we saw them Hyesung and the new BABY haven't met them yet lol. I wonder what their reaction will be lol. can't wait.(≧∀≦)(≧∀≦)(≧∀≦)