Miyanishi Hikaru is a married woman who is introduced to me as my mother's friend. Her private tutoring lesson begins with a "deep kiss" that isn't found in textbooks. Pretending to teach me, she whispers obscene words into my ear. In the closed room of the private lesson, her ripe body presses against mine. She has the calm sexiness that only a married woman can have, and the burning passion that comes from her lips. With her guidance, I discover the depths of a woman for the first time, and repeatedly cum inside her body. This is the full story of the forbidden private lesson in which I violate my mother's friend.