Responses
I don't "hate" the seme (couldn't give less of a shit about that asshole) , but I disagree with your claim that "he never raped the uke".~
1.) He sexually assault him in the past (in Ch.1). I don't think orally penetrating someone without consent is any better .
2.) In Ch.2 , the uke said that he wanted to stop , but the seme continued . So that also serves as rape.

How much I loved this couple, I think the seme is childish and idiotic and the uke knew all his shortcomings and still fell inlove with him and the contract was just the pretext to have sex with him at the end nobody forced him. I don't understand all the hate for the seme, he never raped the uke, he was just trying to get his attention in a very idiotic and childish way, and it is to be expected knowing the title of the manga!
(●'◡'●)ノ