Emi, a swimming instructor at a sports club active in Tokyo. She was scheduled to appear in a new swimsuit promotional video, but during filming, she realized the crew's true intentions and that it was actually an adult video shoot. Initially refusing, she eventually agreed after negotiations and fully revealed her erotic side. Even after filming ended, she impressively continued by placing a vibrator on her groin herself, trembling uncontrollably as she could no longer resist the intense pleasure.