Chan Yota, who works at the popular stretch specialty store 'Dr. Hitori Ecchi' known for its unique masturbation technique 'Changing from the Core,' has received guidance from a senior trainer on the art of 'loosening.' As a result, her sensitivity has skyrocketed, her blood flow has improved, and she is now thoroughly soaked. After completing her training, Chan Yota uses her well-trained body and toys to thoroughly 'loosen' the hardened private parts of men.