I finally realize what the author is getting at.. chiwoo and jihyun couldn't get back together. Thin about it, if you read the side story you're going to get where I'm going... if chiwoo had forgiven him for his actions like he always did regardless of how cruel it is, he wouldn't find a reason to man up and realize that all he's doing is bringing pain to chiwoo.. if you were observing, jihyun told kyujin that chiwoo always forgave him despite the mess he made and that was the problem... but this time he crossed the line so when chiwoo told him that this time he won't forgive him he finally saw the severity of the problem and now he finally saw a reason to change.. he finally realized that his violent reactions has caused chiwoo to be afraid of him, to not want anything to do with him.. It took chiwoo being severely injured and tired of his tyranny for him to see that he's exactly like his father and if chiwoo had forgiven him, he jihyun would never see a reason to change..
Cause let's face it, if things were little different than him acting so violent and trying to isolate chiwoo, chiwoo wouldn't have to go to another school and he wouldn't have met kyujin, which you'll observe in the last two chapters of the side story.. they would have been so good together but the reality is.. he wouldn't be so mature if chiwoo had continued to be in his life, chiwoo enabled his bad tendencies too much and this is why they could not be together
Cause let's face it, if things were little different than him acting so violent and trying to isolate chiwoo, chiwoo wouldn't have to go to another school and he wouldn't have met kyujin, which you'll observe in the last two chapters of the side story.. they would have been so good together but the reality is.. he wouldn't be so mature if chiwoo had continued to be in his life, chiwoo enabled his bad tendencies too much and this is why they could not be together
