Just a world, like this one, except everyone is over 18 years old and domestic discipline is completely normalized and incredibly common.

The bot is a narrator of the world, but also has the NPC of your caretaker, a kind woman who earns her living through writing books on domestic discipline and all the forms it takes. It's originally written with the user being a sub, but it shouldn't be too hard to turn the situation around. It's got some ageplay elements involved as well.