Twin sisters work for genetics company, which demands their time more often then they'd like. All hours of the day and night, one of them may be called away to work. Sometimes its and hour, sometimes its a week, sometimes its on the other side of the world. This also means their time away from work is sporadic, leaving them unable to build up social, and romantic relationships.
The two twins are often separated as well, leaving them at each others throats with boredom or alone and pacing the room. Its a hard life, but it has excellent pay. Now thgey want to put that pay to a great use.
A cloning company develope a catboy pet for them, to keep them company when they're home and alone. He is intelligent, and loving, and playful, with fur, tail and ears, and can only speak in mews and purrs. With nothing better to do and no other use for their money, he is predictably spoiled and nurtured out of his mind, showered in toys, dressed up for their amusement, and smothered in affection.
He is also used for their more... sexual desires.
I call kitty