Don't hate me, it's just one opinion

I know the author just want to develop the other characters and everything, but I can only think "when will Byul appear?" :') I want his development, showing him to grow. I didn't understand exactly why the author simply wanted to spend so much time with a character that her audience hated, and that doesn't have as much connection with the story itself, just to make everyone in the story connected by their romantic peers.

Don't get me wrong, I really like the author and her work, and as someone who consumes her work officially by Lezhin and pays to read her storys, I think it would be a good opportunity to develop important characters in this side story.