Breeder of the Pack (Moon Valley Pack Breeder 1): A Reverse Harem by Misha Ray

Kennedy Statemen knew what she was doing when she signed the contract. It would be her job for the next two years to do everything she could to get pregnant. And according to the pack leader, it didn't matter who got her pregnant; the only rule was she had to breed with the five volunteers. What she hadn't planned on was how much she'd enjoy herself. She never realized how much she would enjoy sex with multiple partners, or how much she would beg for more.

Detailed, kinky sex scenes meant only for eighteen and up. Lots of menages, double penetration, and even a little girl on girl fun.