Married woman becomes a bondage model ~Sex training with pleasure-inducing ropes~ Oishi Saki ROE-317

It all started with a phone call from her husband: "I forgot to bring some important documents, could you bring them to me?" Saki knew her husband was working on a publication themed around "bondage," so she rushed to the workplace. However, the atmosphere there was somewhat chaotic; the bondage model had been unable to attend. Upon seeing Saki, the bondage master Shimizu said, "Madam, you're perfect for ropes." He then invited Saki to stand in for him.