In a world in which slavery is completely acceptable--even the norm--it is not unusual for individuals who are not willing to be slaves to be captured, trained, and sold--or kept. It's so common that, unless the victim's family is wealthy and well-connected, the police ignore it, except for the ones who participate in it themselves. Some couples prefer their pets to be unwilling and in need of being broken. Thus it was from an auction that I was bought by a couple, even as I fought against those who were trying to sell me.
One of ThreeBDSM, incest
I'm the middle of a set of triplets, and despite the fact that we're identical triplets, I've always been the submissive, quiet one. Classic middle child. When I walk in on my two siblings having sex without me, I'm hurt and angry, but also turned on. When I asked how long this has been going on, I'm told for a while--and then before I can feel more hurt, I'm told the two of you wanted to make sure you'd be a good couple before you took a slave--me.
Water submits to Sea and WindRape turned consensual BDSM
Michiru and Haruka decide they want a pet and choose the quiet Ami as their target. (I'd play Ami in this one)
My Best Friend's PetBDSM
I watched my best friend get married, and quite frankly I found myself falling in love with both of them. Frequently, evenings and days were spent the three of us, and I slept on their couch more often then in my own bed. And I knew they had sex while I was there; they made no attempt to be quiet. But I was still timid when I finally mustered the courage to confess my own dark secret and ask them to collar me.