Then explain to me why SHIN, THE ONE WHO RECEIVED IT, ISNT COMPLAINING? I UNDERSTAND it has to have consent, but this manwha has one or 2 scenes with them being not the best with each other, you can check the first chapters, and chapter 79.
Jake does things that in real life are literally criminal, he kills people shoving guns in their asses i mean.
But in this case, i think it can be considered a Kink, because of their relationship. IF SHIN doesn't approve we dont see jake doing that. And they are horny as fuck like in every chapter, they living together we can see shit like that happening. I think the author is just being sincere here.
You don't expect someone who kills people have a perfect moral. Shin doesn't have either, he literally liked jake when he thought he was a gangster. You cant judge this scene with the eye of a normal story.
In chapter 79 we can se that shin abuses jake, with violence and power. But we dont call him a rapist because he isnt.
I didn't like the sleeping kink either. But shin seems to not mind it, and is horny as fuck after hearing of it.

people in the comments doing different mental gymnastics to try to convince this is just part of their dynamic which is fine but let's not gloss over the fact there's no consent beforehand so it's sexual assualt if you like it idgaf but acknowledge it as it is and no it's not people being vanilla or this is just their ship dynamic