Their Broken Doll: Reverse harem dark romance

Erina's family sells her to a pack of wolves. She knows she's there for their pleasure to be used, and then killed, at least that's their intention.
But what they don't know is that Erina isn't willing to accept that fate. She's determined to do whatever is needed to stay alive. The pack thinks they can just use her and throw her away, but when she's done with
them they won't be able to survive without just another moment with her.
Because Erina doesn't want to be their broken doll, she just n...