>>11335196
Always liked the aspect of Patriarchal slavery where it's far more personal with smaller harems.
Sure the rest of the setting has lewd things like public sex, slave breeding, etc. (like D&D but lewd?)
But that's the back drop to how you Develop your own slaves.

The classic RPG maker games, with a focus on the MC and his harem of slave women.
Closest thing to that is Strive4power, sadly there's not a lot of JP adult games with a focus on slavery.