Kotobuki Ryou, a renowned AV star known for his charm, skill, and prowess, confidently declares on a live stream that he's impervious to pleasure from sex toys. Intrigued by his bold claim, a sex toy company challenges him to test their products. Despite his initial reluctance, Ryou encounters Koga Takayuki, a representative who effortlessly brings him to climax with their innovative toys. This unexpected encounter leaves Ryou enthralled by newfound sensations that linger in his memory, sparking a journey of exploration and desire. Dive into the captivating tale that unfolds, accompanied by the bonus one-shot: 3D Sensei.