Diamond comes

Thrust.

Out.

Thrust.

Out.

Thrust.

Out.

An additional week had passed. Perhaps more. Diamond wasn't sure. All she consciously knew was being trapped in this cycle, her artificially widened asshole pounded again and again like a piece of meat.

But then she felt something building up... And at a sudden she came, her warm semen splattered on the floor from her caged cock. It wasn't the kind of orgasm she was accustomed to. But she still found it enjoyable.

"Mhm...."

"Mhmmm...."

"Mhmmmmm...."

She gasped, biting on her ballgag, her limbs shaking while they were still locked to the frame. But suddenly another thing happened; two things, as the pounding had stopped, and the cell's door opened.

What she saw was a tall woman, black hair, blue eyes, wearing a blue catsuit and ballet boots. She stepped close to her, leaned down and patted her like a dog.

"Excellent, Diamond. You made the first step on the road of becoming a sissy fuck slave. A very happy and very proactive sissy fuck slave," she said as she kept patting her. "My name is Mistress Vanessa. I am your trainer."