Mio, a masochistic female college student, is aware that her masochistic nature has blossomed, but cannot accept it. Should she end the master-slave relationship? Struggling, she submits once again to the middle-aged man who trained her in perverted play. When they first met, Mio was a serious girl. Now, she is a masochist who enjoys being treated as a slave in a master-slave relationship that has nothing to do with romantic feelings. After it's over, she looks sulky, perhaps from regret, but she can't help wanting to be trained again, so she contacts him. This cycle repeats. Mio is an ordinary female college student in the eyes of the world. Normally, she would be enjoying her 'youth' by focusing on her studies, club activities, and going on dates with her boyfriend. However, after attending classes with her classmates, she becomes a perverted masochist who gets her pussy wet while sucking her master's unwashed dick. As soon as she enters the hotel, she lifts her skirt and a strong female smell wafts from the air. It was clear that she had been getting her pussy wet and excited since the day before she met my master. The moment the vibrator was thrust into her, she showed a satisfied expression and began to move her hips on her own. When she was made to wear a school swimsuit that was a little on the small side, obscene tightness appeared in various parts of her body. Feeling embarrassed, her masochistic instincts were probably activated, as she took my master's cock into her mouth and began to suck it. "You've become more sensitive recently, haven't you? If you ever get a boyfriend in the future, you'll be amazed at how sensitive you are." Whispering this, he drips saliva into Mio's mouth. Not satisfied with just sucking a middle-aged dick, she sometimes wants her master's saliva and entangles her tongue. That is the signal for the training to begin. Recently, when she smells the taste and smell of saliva, her pussy gets wet easily. At that moment, Mio feels the reality that she is under her master's control, and at the same time, she becomes anxious about whether she will be able to have a normal relationship in the future. Each time, she faces the reality that she is no longer a normal girl, and has become a slave to her master and is addicted to pleasure, along with a sense of despair that she is no longer a normal girl. Then she tastes the thick semen of her master that was ejaculated into her mouth. She squeezes out every last drop and shows a satisfied face. Mio takes a shower in preparation for the next "training". However, her pussy is already soaking wet from anticipation. When she sticks her finger in, the juices overflow one after another. Her lower body twitches in response to the movements of her master's fingers. The movements inside her vagina become more active. To start with, he uses a vibrator, and her engorged and sensitive clitoris swells up to the size of a bean. Mio lets out a loud cry and then starts twitching. She has a dazed expression for a while, as if she is about to climax or has lost consciousness from the pleasure. Again, Mio repeatedly entangles her tongue with her master's, devouring his saliva, collecting it in her mouth before dropping it into her stomach. A dick is forced into her mouth, filled with both her master's and her own saliva, and she swallows it with all her might with her small mouth. Finally, she guides her master's dick into her pussy and inserts it raw. Her appearance as a serious female college student has completely disappeared. Her nipples become erect and she responds to her master's caresses. With her vaginal opening blocked by her master's dick, she let out a tantalizing moan. Mio has been trained by a middle-aged dick and has fallen into masochism. She will no longer be satisfied with normal sex.