Ayaka had awakened to strange sexual desires since her youth, often inserting objects like pencils anally in pursuit of abnormal pleasure. After marriage, poor sexual compatibility with her husband left her physical needs unfulfilled, deepening her dissatisfaction. One day, she stumbled upon a website dedicated to anal stimulation and, gathering her courage, decided to visit in person. The experience overwhelmed her with intense pleasure, becoming the turning point that set her on an entirely new path.