Slave doll Aaruna put on a huge rubber gag herself. There was a special space inside the gag for her tongue to insert, so that her tongue could not move and she could not make any identifiable human sounds, only moans. With handcuffs, she inserted the metal butt plug into her anus with difficulty. The moment she inserted it, she let out a sexy moan. This will be her source of pleasure and pain. Then she put on a hood, cut off contact with the outside world, and fell into a world of endless darkness and fantasy. Her master turned on the software that adjusted the frequency of the electric current and composed a beautiful tune. On the other end, the electric current brought endless pain to Aaruna, but Aaruna's pain was the master's endless pleasure. She moaned and trembled as she disappeared into the darkness.