If you go back to the beginning of chapter 6, you can see the seme (light brown hair - HaeJun) talking to his friends, saying some really sus shit about the relationship and how he's messed with people like this in the past. That's why people don't like the seme and want the uke (JiTae) to drop his ass.
Ohh yeaa just noticed it thank you so much for explaining
its bc seme is just trying to make MC fall for him so he can win a bet...
I see i wonder how i missed that important part thank you for telling me !!
Why people is getting mad at the seme?? The bad one is the red haired guy right??? Hes not the seme tho.. im lost