Well, first of all the leads. A short buff guy and a very tall, very thin woman aren't the sort of leads I've seen in many if any romances. I especially pretty rarely see any black girls as dark in complexion as Essence as the female leads of anything, so if you were to line her up with the FLs from a dozen other randomly selected romances, she'd probably stand out pretty distinctly.
Secondly, the overall idea of the story. The female lead isn't a pushover and yet she submits to everything everyone wants, why?
The idea of someone who has no feelings for or interest in anything or anyone but still tries to stay in people's good graces out of worry that if she ever DID reach a point in her life where she wanted people to love her, they'd all be gone, is something that stands out to me as something I've never seen anywhere else.