Kristina made a little jerk in surprise as Derek touched the Hitachi wand to her shoulder. It was so much more powerful than she had imagined. "Whhaaat sssettinggg isss thattt onnn?" she asked, her voice wavering as the vibrations filtered down into her chest when the machine was pressed to her shoulder! While Kristina had received regular massages, she had never been massaged with an electric tool before. She wasn't sure which was more distracting, Derek's cock and balls resting on her lower back as he sat on her, or the Hitachi device.<br/><br/>"Don't worry about the oil, just move it around a little. It gets kind of itchy if you leave it in the one place," she said with her head still looking down on the mattress. "...and who knows about Japan. This is just based on the idea and popularity. Do you think that they eat Californian rolls as sushi in Japan?" Kristian quipped. "Maybe a little lower..." she suggested, not exactly a fan of the 'massage' that she was receiving.