I super agree with you. I can really see the "Hyesung also left Byul" thing being brought up again, and it's honestly so, so unfair to Hyesung.
It's understandable for Byul to feel betrayed about that truth, but it's hard to have the heart to blame a young 20s adolescent who got knocked up after being revealed the truth that he was an omega. Not to mention, bribed to keep the baby 'cus some alpha had a baby fever.
We've had enough of Hyesung being 'the bad guy' back in the first story. (I still remember a lot of people being pissed af for him leaving Byul, and Dojin had to do all the parenting lol).
Hyesung could leave their ass or just lash out, and I would applaud him because he has every right to break down and never trust Dojin again.
I was here before, talking about Hyesung and the possibility of him learning about the betrayal. Honestly, my opinion remains the same—I still couldn't care less about any other characters besides Hyesung.
As someone with a petty side, I do wish that Hyesung stays firm in his decisions and priorities. I just hope it doesn't reach the point where he has to forgive his mother simply because he feels he must, he had to, right??? Because his only family supports the woman who abandoned him.
What frightens me the most is the idea that this arc might paint Hyesung as the bad guy—what if Byul learns that Hyesung abandoned him when he was still a baby? You know, this will never be Hyesung's fault, and I know full well where the root of this all began. No one can make me believe that Hyesung is as bad as his mom or that he has no right not to forgive just because "he did the same." If he spirals, I'd understand—it would be the only valid crashout, I’m afraid.
But whatever his decision will be, I'll always support him—always team Hyesung!