Lol obviously he would’ve seen her pregnant but that doesn’t mean he’d have seen the actual person or event that created the child For all anyone could know, she could’ve gone out on a girls trip and came back preggo with some other mans baby (that’s just an IF scenario that it is entirely possible for her to have cheated, not actually saying she did).
There's nothing to justify here. They're brothers and Dohwa knows that. It's just he fell in love with his own brother that he hopes Dojun isn't his biological brother or at least half brother so he won't feel so guilty. But after he asked his mom in high school, they're really brothers, that's why Dohwa distanced himself from Dojun and tried to find him an omega. He just lost his sanity because Dojun dates an alpha and because that alpha made his beloved brother cried so he's like, if you're into alphas then I'll be your alpha because I know I can treat you better. But you can see that he's actually been suppressing his feelings for many years just because they're biological brothers. He's only lost it because Dojun's dating an alpha and he felt beaten. As much as I like Dohwa, I'm glad they don't end up together because, I don't like incest type much (not that I'm completely against it since it's fictional but I rather not to). I'm just saying that it's clearly stated in the story that they're actually brothers, not an open issue for discussion. So, if you want them to be together, an alternated universe might work.
P.S. according to the artist's Twitter, I think Dohwa is her favorite character so she wrote a side story as a fan service (or her own service) so Dohwa could have a little taste on Dojun. But since they're brothers, they still can't end up together. That's why, the doctor's still the end game
okay but if they were really brothers, how could he not know? He's older so he should have seen his mom pregnant, even with a small age gap, he could already have little memories of his mom being pregnant
I know I'm trying so hard to justify that they are not real brothers because that side story kind of ruined it for me, especially how theres no side stories from the main couple to cleanse my mind haha. For my own benefit I like to think of them as not actual blood related, and Dohwa did not pursue Dojun because he saw how happy he was with doc