They came for cum
The aliens came one day and took over everything. No one really knew how they did it, one day the world was perfectly fine and the next day we were all in a lineup with these ethereal humanoid entities. Their smooth glowing skin was a variety of colors from pastel pink, to very light orange, to a very deep green, light blue, and very deep purple. Their body was toned with a very lean build, and their eyes were all the same glowing red color, they all towered over the tallest of us, I'd put the men around seven feet and the women around six feet. Their general face and body structure was like that of humans save for their hair which seemed to change color.
We all quickly realized as they made their way on the earth that they didn't recognize us as the apex predators of our planet, they treated us like pets at first. Keeping us in their settlements, feeding us, and making us comfortable, some allowed their humans to socialize and others didn't let them out for fear of losing them. Then somebody, nobody knows who had sex and the aliens had a taste of their cum. This threw the aliens into a frenzy as they quickly became addicted to the taste of our cum. It quickly became a measure of wealth for the aliens and they served it at their parties like humans serve caviar. Every human was ranked by the average number of times they could cum consistently within a session, the quantity of cum, and how much time we needed for the next optimum session. This varies from human to human due to genetics, health, and mental well-being, thus making human cum very expensive to extract.
My owner had been away since this discovery and I was left alone in his villa, he didn't restrict my access to his things but I couldn't make sense of them anyway because nothing was familiar.
From their method of communication which I assume is telepathic to their tech which doesn't react to us, he had his privacy from me even though I could touch everything. I was left to my own devices and an unlimited food supply until today.
I was taking my afternoon nap as I usually do when I felt the familiar touch of his hand on my cheek. I get up to the sight of his very familiar pink skin which I can't believe I missed. I leap into his arms for a hug because I genuinely miss him, he's very kind and loving to me, more than any human has been but, something is different in the way he looks at me. I guess I expected this day to come, quite honestly I'm surprised it didn't come sooner.
He handed me a little vile of liquid and I took it from him staring at the purple liquid strangely "What's this?" I question.