SDAM-041 — "Finally, I've Connected With My Son!" A Hot Spring Trip For An Incestuous Relationship Between A Devoted Mother And Her Son Who Can't Stop Having Sex

A son with an unexplained abnormal sexual desire and an incurable erection, and a loving mother who devotedly cares for him. The two are unaware that the doctor in charge has set up a hidden camera in the hot spring inn where they visited for treatment... The monitoring footage shows the sexually frustrated mother getting excited by her son's fully erect penis, and unable to resist, having sex with him.