Were you abandoned by one of your parents? I hope this isn't a rude question, but I see many comments saying that "they would never forgive the person who abandoned them." But I think they're talking without really knowing what that is, because it's never happened to them. I can't tell others how they should act, because I think it's how I would act, but firstly, I'll never really know how I would act until it happens to me. To be truly empathetic, you have to recognize that you will never fully understand a situation until you experience it firsthand. I personally wouldn't want to talk to my father anymore, although I didn't always have bad memories with him but he's still not completely out of my life, I think that if he had abandoned me when I didn't even know him, well, what does it matter? I didn't even know him. And Hyesung is hurt by his mother's actions because before she abandoned him, his mother didn't treat him badly. I honestly don't think there's a need to flesh out that relationship, but it seems the author still wanted to explore that plot point which I find boring
Uh yeah, my single mother dropped me off at neighbours house asking them to watch me for a bit then never came back. And she only tried to get in contact with me years after being in the foster system when she lost her rights as a foster parent and didn’t receive her monthly baby bonus (I was already a teen by then) No father in the picture mind you. She loves me, I know that, she’s wrecked with guilt. She gave up being a mother to indulge in addictions but when she was sober she treated me like her world. I think I can say I was officially abandoned though.

The difference here is Hyesung came back and was with his child through his entire childhood. Hyesung’s mom straight up abandoned him and still hasn’t reconciled to this day! Byul didnt even properly apologize for talking to his mom’s neglective abuser but instead suggested Hyesung to go forgive the mother that abandoned him! As someone who was also abandoned by their mother, yes I still talk to her and don’t dwell on the past, but she KNOWS I never will forgive her for abandoning me and she is not a close part of my life as a result of her own actions. What a POOR decision made by the writers.