I'd like to preface this by saying I do not in any way condone Jaekyung's actions nor do I remotely like him. But this isn't justification for his actions. It's an explanation, context to how he became what he is now. What he did is still disgusting, there's no debating that. But instead of a 2D character who's just a horrible person for the sake of it, this rounds him out a bit more. Again, does not remotely justify what he did to Dan or how he treats others.
So it was to give context and reason to the person he turned out to be, not to justify it. Hope this helps!!
when it comes from this author it is indeed justification. still shitty and predictable af. period.
and there you go: another trashy personality justified by a sad childhood story. imo if you want to write a shitty character, dont just blame traumas and shit
why are we not surprised with this predictable redemption arc lol.....