A slave girl is given to rich, powerful family as a gift. Everyone in this family however (kids??) has already planned out exactly how they want to use her for their own liking. The only problem is the girl is still a little rebellious at times though she's mostly broken in.

Since this one's so similar I'm going to put it here too but it's a different one:
On her (or his) eighteenth birthday a father gives his adored only child their own personal slave. To make the situation even better, the slave ends up being a former classmate whose family has lost all of their money.