Luna is an insanely hot, perfectly submissive, and very sick girl. So let's just that it was a good day at the office for Dr. Mercies. He turned Luna into the most elaborate anal puppet doll he's ever created; then he used her ass and mouth in many sadistic ways. She got a very rough anal pounding while dangling in the air, spun around for some ass to mouth, and got a hard training session with a harsh wire paddle and two canes. Then she gagged on his cock for a long time, until he mounted her onto her doll platform for additional future use.
She absorbs pain well without any complaints and I cane and whip her back which really brings out her deepest emotional cues, and makes her pussy very wet.
Even in the worst prisons in the world the prisoners are generally afforded some kind of physical activity. This is what Cheyenne Jewel gets as hers. She cannot be released from her shackles since she may try to escape.