Just because Kim Dan lets everyone walk all over him doesn’t mean Jaekyung should take advantage of him. He should’ve seen through his act and kicked him out of his penthouse before they started fucking. He should’ve known Kim Dan was gonna catch feelings… (that’s unrealistic though cause he has low e.q) His rudeness and roughness is due to the enablers around him and his lack of sex ed. Of course if all of that happened we wouldn’t have a story and they wouldn’t experience growth in that manner so..,
DID YOU READ THIS BULL SHIT BEFORE POSTING IT. WHY ARE WE BLAMING THE VICTIM NOW? if we are going to blame someone it will be only Jaekyunh, he's taking advantage of Dan's financial situation for sexual gain. He could easily pay Dan for the work he does without expecting sexual favors, but because he's manipulative and predatory, he chooses not to. So no, it's not Dan's fault.
For the haters, I am not defending Joo Jeakyung after seeing his past. I always thought he wasn’t as bad as people make him out to be. He made a deal with Kim Dan and that is all he asks for, “Whenever. Wherever” But Dan is the one who started developing feelings for him. I do think Joo is a little hard on the small guy whenever they do it, but he is the one who agreed. Come on…
And Joo Jeakyung did not take advantage of Kim Dan’s financial situation at all. He paid off all the debt because deep down Joo is a good person. And he wants Kim Dan to only focus on his physical performance and it seemed Joo hated the few times Dan’s personal issues seeped into his ability to perform well. If anything he really didn’t need to pay his mountain of debt after paying him so damn well in the first place.
I tried to understand your point. From your words, since Jaekyung paid Dan to have s*x, their relationship is professional- a worker and a contractor. Sure, Dan agreed to fulfill whatever Jaekyung wants. However, it doesn’t mean that Jaekyung can disrespect Dan’s body and disregard his opinions. Being professional comes hand in hand with ethics, and Jaekyung clearly violated many ethical standards. You can see it happening in all the uncensored chapters but for a clear example, look at Ch. 35 - Jaekyung deliberately called Heesung over to display an oblivious Dan naked. He neither asked for Dan’s consent nor did he mention the event. All because he was jealous. In what way is that being professional? Another point is Jaekyung paying Dan’s debt. Fulfilling his part of the contract by providing money is bare minimum. Didn’t Dan do his part by providing his own body, whenever and however, even when his body couldn’t keep up? So, no. Jaekyung was in no way professional because being in a s*xual relationship does not mean that you can violate your partner’s right. Sadly, all their interactions were filled with such events.

I don’t understand why so many people hate him. Just because he has a rude attitude doesn’t mean he is a bad person. Honestly, Dan was the one who agreed to the terms and agreement knowing who he was. He paid off Dan’s entire debt as well as his grandmother’s hospital bills, while saving him from being r*ped. All he wanted in return was professional f, no feelings attached. Dan took on more job just to buy him a present that ended up exhausting him and his performance, of course Joo will be mad.