NKD-243 - NTR Request: The Wife Who Fell After a Lecture

At her husband's request, a wife meets his friend alone. After finishing their business, the friend lures her back into the room under the guise of giving her a gift. He exploits her innocence, lecturing and manipulating her until she finally breaks. Having fallen into an illicit affair, she becomes addicted to his training, eventually turning into a nymphomaniac who seeks out other men—all according to her husband's twisted master plan.