So Baekhee(mc) has a codependent relationship with an asshole he's known since childhood(he's not the ml).Unfortunately he can't let go of that relationship even though he knows it's bad for him(he has his reasons).And the asshole,fully aware of this,takes advantage of him — sexually as well.
There are other scenes before chapter 28 too.Nothing explicit but you can see there's something going on there.The warning exists because,by this point,the main couple is already "together" so witnessing those kinds of scenes becomes even more painful

i’ve been wanting to read this story for a while now but i’m letting it marinate. i saw that there’s a dubcon warning in chapter 28. can anyone tell me if it’s bad