The Tyranny Of Eva
The slaves quickly arranged themselves before Eva when she arrived. Their postures were unlike the respectful form of the concubines. Theirs was naturally a step further than that, being utterly subservient and submissive.
After all, while the concubines were relatively new, these slaves had been here since Vita City-State had been merely Vita Settlement. Draco had glossed over them back then because he wasn't interested in seeding them yet.
As such, they had been relaxing all this time, waiting for the day their wombs would be filled with his seed to birth his children. And from the way Eva had made things seem when she purchased them, it would not be a one-time thing, as they were likely to be turned into baby factories.