I get you. I was frustrated for a while too, but I barely got through it to chapter like 24-ish because I knew for a fact that Yulha was shouldering trauma that never got processed fully by him. He was just starting to function as a normal human being again when boom another alpha comes by to shake up his duct taped life.
It does finally get talked about between them later, but they enter a relationship first. I'm glad he finally realized that he liked Dojin and stuff, but it was frustrating because we as the readers know he isn't like that, but Yulha who has been burned once, is scared to trust again （￣へ￣）
Honestly, the only people I hate are the blond teacher and the ex (along with those other trashy alphas)
I know I shouldn't complain, but it's so hard to understand. the uke whining so much with nonsense. I'll just leave it be for now, otherwise I'll hate the uke because the translation may took different understanding (for me)