He's undercover and she's naive, what happens when they find each other?

When Karn, a member of the Kindred Elite Espionage Corps, is given the assignment to go undercover as a bodyslave at the home of a cruel Mistress, he doesn't hesitate to take the job. After all, lives are on the line and he has to find the list of Kindred warriors who have been taken prisoner. But to his surprise, he is bought by Mistress Maribella, not for herself, but for her innocent daughter, Lilli.

Lilli has never owned a bodyslave before. She was raised in a convent, far from the hedonistic excesses of her native culture and she knows very little about the world. She does know, however, that she's not supposed to fall in love with her tall, muscular bodyslave. But how can she help herself when Karn is so patient and gentle with her? He teaches her things about pleasure she never knew were possible. Best of all, he's a Hybrid Kindred, which means he can't bond her to him or get her pregnant, which leads to what would be extremely risky behavior with any other male. But when her mother insists that Lilli take fertility hormones in order to bear an heir for their family, complications arise...
Will their love survive the test?
You'll have to read Protecting His Mistress to find out.