The thing is, people like this sort of thing within the realms of what it is. What people like you don't get is that when something is "hot" or "cute", it is from that perspective and in no way, shape, or form comparable to a story depicting a "regular" type of romance.
If you dislike this type of thing, reading the literal synopsis should have told you that. No "healthy, green flag" relationship starts with motherfucking blackmail. Did you just come to complain or did it really take you 4 chapters to realize that?

uh why do y'all like this shit. it's toxic and all. first of all the mc didn't give his consent and apparently they are just fooling around with him? seriously? what a waste for a good art style like this. (I read the first 4 chapters and I gave my verdict)