No in the webtoon after having self awareness he realized that he likes Dan Oh and affected by Haru's presence. He became nicer to her especially when volume 4 started because in volume 5 Dan Oh is not part of the story anymore
I don't understand how can people actually like Kyung as a character. I mean, if it's for Lee Jae Wook's portrayal…
In the webtoon he confessed to Dan Oh that he's feelings turned to hatred for her because he knows in the end she will leave him and he will be alone again just like when his mother died.
Baek Kyun my babe ain't a villain, he's just another second lead who'll leave the drama with "second lead syndrome"
Later in the webtoon he finally became honest to himself that he likes Dan Oh.. he's just being a jerk to her because he wants to deny his feelings and doesnt want to get hurt and be left alone by Dan Oh in the end like his mother did.