Are you fucking stupid?? Did you forget Hyesung was raped and then babytrapped?? He didn't want to give birth to Byul but was forced to. Dojin was rich and capable of growing Byul in a loving and nurturing environment. And Hyesung eventually came back for his child, unlike Hyesung's birth giver. Hyesung was abandoned by that woman as a kid, and that too with an abusive father. Hyesung grew up in an abusive and toxic environment that shaped him to be who he was when he was pregnant with Byul. His so called mom escaped, didn't think once about the kid she raised, and went on easily to start a new family. And she only reached out to Hyesung again just because he was Dojin's partner and she wanted money. No fucking way you are comparing these two situations.
Are you crazy? Haven't you read this manga properly? Hyesung's mom and dad met at a bar and his mom was attracted to his father even though they had a huge agr difference. First of all go and re-read the chapter 30 and you will know. She got pregnant accidentally not because she was raped . Duhh . And yeah hyesung dad is a jerk. And she already knew what kind of men he was .

The comments are hilarious. "why are we sympathizing with hyesung's mom'' Mind you hyesung did the exact same thing as him mom by abandoning his child. Even after coming back, he only stayed cause of money and that bond instead of actual affection for byul. It was much later that he started loving byul genuinely. Sympathizing with him but demonizing his mom, ooooh the bl fans living up to their misogynist reputation