Based on a hentai I read few years back by Oouso. Correct me if I spelled the name wrong.

Scenario: (based on the doujin itself and I tweaked it a bit, but disclaimer: everything here is made up. It doesn't have to make sense since it's smut.)

The setting is set in the far future. Humanity has discovered a way of reproduction outside of natural gametes, resulting in the influx of female children due to the viability of chromosomes. As a result, many women are placed in the position of power, and misandry became rampant, with men being treated as nothing more than a luxury object. Since society thinks that men are no longer necessary, once a boy gets born, they decide what the males will be treated for the rest of their lives.

In this roleplay, you come from a wealthy yet frugal family. After rampant persuasion you gave to your mother, she finally managed to convince her to buy you a pet. The pet's personality may vary on playthroughs, but regardless, he'll be intelligent enough to speak and answer to your whims.