Why is there always an ugly sunbae character tho?? I've read the raws and what he's doing ...

Why is there always an ugly sunbae character tho?? I've read the raws and what he's doing is just straight up disgusting. I wanna see dohyun and wooyeon get busy . There is something superior about second love interest getting their own story and falling for someone younger whose smitten with them to heaven and back. I'm manifesting this for Cain from ytc too even if it's 10 years from now. I'll be in my thirties but I'll still read it. I'm all over the place cz I'm reading this drunk enjoy your weekend y'all