Women with piercings in their nipples

Satsuki is a nurse who works at a cosmetic surgery clinic. One day, a woman named Ryoko came to her clinic and asked Satsuki to get piercings in her breasts. From that day on, bouquets of roses began to arrive at Satsuki’s place. The person who sent those bouquets was a man named Gondo. A few days later, Satsuki went on a date with Gondo. He forced her to have sex with him. From then on, Satsuki was tied up with chains around her arms and legs. She was locked up in an apartment, and Gondo used her as a slave. One day, Gondo took Satsuki to a private club. He told the waiter to fill a new bottle with alcohol. Then, they went down to the basement where there were cages with names of their owners written on them. Inside those cages were women who had their limbs tied up, and some of them were completely naked and tied up as well. This was a place where women were kept as slaves. Among those women was Ryoko. Gondo dragged her out of the cage and used Satsuki as his slave.