Responses

You described it perfectly. It's so difficult to put it into words since it's a sensitive subject. I think victims of abuse that end up reproducing the same behaviors are perpetrators, yes, but they were victims too, and someone can be so broken inside that they can't realise the damage they are causing on others until it's too late. Although Jihyun has committed his sins, my heart aches a bit for him too.
Lol this is all fiction but it brings up a matter that is always important to think about. Is so important to seek help and offer help
You have no idea how happy I am that Chiwoo told Jihyun off, and ended the toxic relationship between the two.
I do not like Jihyun, I haven't since the moment he was introduced in the story, always leaving a bad taste in my mouth, but my heart hurt (only a tiny bit though) when he was crying and asking for forgiveness. Abuse changes you, sometimes for the worse, and victims of abuse can become violent and pass it onto others. I would be lying if I didn't feel at least something for Jihyun in that moment.
That being said, if he gets sent abroad, I hope he gets the help he needs to become a better person and to find somebody that makes him happy.