My girlfriend's real experience

Chapter 1: The Beast Cult's

Little Brother I'm a PhD student at a certain university in northern China. Actually, it's more like during my first year of master's studies, my advisor half-coaxed, half-tricked me into pursuing a PhD, hoping I'd stay and assist him with a three-year project for the National Science Council. Since I didn't have much of a life plan, and the professor was a young teacher who had just returned from abroad, and we got along well, I skipped directly to the PhD program during

my second year of master's. My girlfriend is a junior I met in university, named Shi Fan. Although her name sounds like a quiet beauty from a literary novel, she's actually a lively and outgoing girl, and her style is very sexy and alluring. While she's fair-skinned and slender, her voluptuous figure is undeniable. Her angelic smile and appearance, combined with her devilishly hot body, sometimes make men feel an irresistible urge to pounce on her and conquer her. Because of this, my girlfriend Shi Fan is frequently harassed by perverts on buses and subways, which goes without saying.

My girlfriend and I are studying different majors, but she's currently a first-year master's student at the same university as me. She nominally lives in the dorms, but often stays overnight at my rented apartment near the university. Occasionally, when she's very busy, she'll stay in the dorms for one night.

One time, she came to my place and we had our usual passionate encounter. I noticed she was very aroused that night. Positions she usually finds embarrassing weren't awkward at all; she seemed to enjoy them. She was more open with her moans than usual, and even straddled me. That night, I was so stimulated by her arousal that I ejaculated four or five times, ending up completely exhausted. Afterwards,

we lay in bed, and my girlfriend seemed a little troubled. I felt something was off; her attitude that night was different from usual. So I started questioning her. At first, she wouldn't say anything, but after my persistent questioning, she finally stammered out the truth.

It turned out that it was her turn to present the project she had taken on today. She grabbed her laptop and went to her advisor's lab to give her report. Shifan's boss only had three graduate students: a senior student, herself, and a male classmate. The other two weren't there. Her girlfriend knocked on the door, and the professor's voice came from inside: "Come in."

The professor's eyes lit up when he saw her. Because of the hot weather, she was wearing a pink, form-fitting strapless top and a white skirt that was about 20 centimeters above her knee. She closed the door behind her and sat down next to the professor, opening her laptop and diligently giving her report. At first, the professor would point to the screen and ask questions. Later, he pretended to have a problem and deliberately placed his large hand on hers, the hand she was using the mouse, and occasionally stroked her hand. At first, she didn't think much of it. Later, the professor put his other arm around her shoulder, and she realized she was very uncomfortable. The professor's attitude was getting strange, but she still shifted slightly, not daring to make a sound, and continued reporting her progress with a flushed face. The professor grew increasingly bold. The hand that had been around his girlfriend's shoulder moved behind her back, stroking downwards until it reached her slender waist and hips, kneading them. Because her thin bra straps reached just to her waist, her skin was exposed when she sat down, and the professor's hand lingered there.

The girlfriend could no longer pretend not to notice. She gently shifted her body and politely said to the professor, "Professor Liu, you...you shouldn't do that..."

Professor Liu's right hand, which had been on his girlfriend's mouse, slid down and rested on her thigh exposed by her short skirt. He said, "Xiao Fan! I have a few questions for you. I hope you answer them carefully!" As he spoke, his lewd hand slowly slipped under her skirt, only to be stopped by her hand in front of her underwear.

My girlfriend, trembling, asked, "Teacher, what's wrong?"

The professor whispered in her ear, "Xiao Fan! I know you really want to get this National Science Council project. You also know my position; I can easily help you pass. You know, you're a very charming girl. I need to ask you, do you have a boyfriend?"

My girlfriend struggled to stop the professor's hand from reaching under her skirt, saying, "I already have a boyfriend! Teacher, please don't..."

The professor lewdly laughed and said, "How about this? You break up with your boyfriend, and I've rented a place outside. You can move in with me, okay? That way, your project will be considered passed. How about that?" He then forcefully pried my girlfriend's hand away and gently stroked her clitoris through her black sheer panties.

My girlfriend, panting from the professor's teasing, said, "Teacher... don't do this... I have a boyfriend..." She twisted her body, struggling to stand up.

The professor shoved his girlfriend back into her chair and said, "Xiao Fan, how about this? Go back and think about it for a few days. After all, with your research proposal written like this, hehe, without my help, I'm afraid..."

My girlfriend hesitated for a moment upon hearing this. Taking advantage of the situation, the professor kissed her. She was too scared to struggle. The professor thrust his tongue deep into her mouth, and she didn't dare resist, only managing a weak tongue-twisting kiss.

Finally, the professor's hand was already inside her chest. Shyly, she pushed him away, picked up her laptop, and said, "Professor... I'll think about it some more... Goodbye..."

The professor leaned back calmly in his chair and said, "Go back and think it over carefully, Xiao Fan." The implication was that if my girlfriend didn't agree, the research proposal would fail.

When I heard my girlfriend say that, I was furious. I wanted to call the police immediately, but she quickly grabbed me and said, "Don't do that, Ah Jie. I don't want to fall out with the professor right now!"

I couldn't argue with her, so I said resentfully, "Then just ignore him. Your plan is good; I don't believe you can't get through it without his help." My girlfriend

said sullenly, "It's not like that." Then she told me a story. It turned out that once, my girlfriend had to go see the professor. She noticed that the professor's door wasn't closed properly, leaving a crack, and she could hear strange noises coming from inside. My girlfriend peeked out and was shocked by what she saw.

It turned out to be a graduating senior, completely naked, sprawled on the professor's desk. The professor was thrusting into her violently from behind, and she was moaning incoherently. The professor smugly shouted, "Xiao Hui! You're so obedient and well-behaved, I really don't want you to leave. But don't worry, I promised you that after I've done it with you, you can graduate smoothly! Otherwise, how could it be so easy to pass? Hahaha..."

The girlfriend was shocked. Later, she secretly hid in the bathroom, calculated the time, and went back to find the professor. She saw that the professor and the senior had put their clothes back on and tidied themselves up. However, the senior's face was flushed, and the professor looked smug. The girlfriend pretended not to know, went in to report, and left. Before leaving, the professor winked at her. The girlfriend was startled. It turned out that the professor had deliberately opened the door a crack and called her back to report so that she could see the senior's situation and understand how to please the professor to graduate smoothly.

Hearing my girlfriend's description, and seeing her pitiful expression, an image suddenly flashed into my mind: her naked, being forced onto a table and penetrated by the professor. A sudden rush of blood shot through my groin. I never imagined that imagining my girlfriend being coerced would arouse me! I quickly shook my head to dispel the thought. Anxious about my girlfriend's attitude, I asked, "So, instead of reporting the professor, you're going to agree to live with him?"

My girlfriend hurriedly explained, "That's not how it is. I plan to appease him first, without rushing to reject him or agree to anything. In a couple of days, the professor is taking me to Japan for an international conference where I'll be presenting the results of my project. If the presentation goes well and the project passes smoothly, I'll politely decline his offer. If I confront him now, the professor will lose face, and I'll be in real trouble." Hearing this, I was at a loss and agreed with her. However, I hoped she would be careful on her trip to Japan.

That day, my girlfriend departed for Japan, expecting to return in five days. Before she left, we agreed on a time; I would pick her up in five days.

The time had come, but the night before her return, I suddenly received a call from her. She sounded anxious and said, "Ah Jie, I'm sorry, something came up and I'm delayed. I'll be back in a few days. I'll let you know when..." Then she hung up. "Hello? How many days is 'a few days'? Where are you??" But the call was already disconnected, and there was no response when I called back. I was extremely worried about what had happened.

Almost five days later, my girlfriend called again, asking me to pick her up from the airport. I hurriedly drove to the airport to pick her up. On the way back, I anxiously asked, "Xiao Fan! What happened? Why were you so late coming back? Where did you go?" My girlfriend nodded and remained silent for a while, then looked up and forced a smile, saying, "The seminar didn't go very well, so I had to do some extra reports, which delayed me a few days. It's okay, I'm a little tired and want to go home and rest." Although I was a little worried, my girlfriend assured me that everything was resolved and apologized for not telling me about the delay earlier. I thought about how hard she had worked and decided to take her home to rest. But later I discovered that it wasn't like that at all.

Several days later, my girlfriend came to my room as usual. She went to take a shower first, and I watched TV out of boredom. Suddenly, her phone beeped with a text message. I picked it up out of curiosity and was shocked. It read: "Hehe, my sexy little sweetheart Shifan, according to our contract, are you going to come and give me some fun again tomorrow? Remember! Not only do you have to come on time, but this time you can't wear underwear, and remember to take your birth control pill beforehand. This time I want to play something more intense. Smart Shifan, you'd better not tell anyone, otherwise those videos from Japan will get leaked, and how will you face anyone after that?!"

I was terrified when I saw this message. It was from the professor! Good heavens, what Japanese videos? What contract? And what about "having some fun" and birth control pills? What does "playing something more intense" mean? Did my girlfriend Shifan have something happen with the professor in Japan? All of this shocked me. So I decided to remain calm and secretly investigate what had happened the next day. After my girlfriend came out of the shower, I pretended not to know anything about it, only saying that someone had sent her a message. After she picked up her phone and read the message, her face turned slightly red and embarrassed. I pretended to ask who it was. She only said that a friend had asked her to go shopping. Her attitude made me even more suspicious.

The next day, when my girlfriend went out, I pretended to tell her that I had to do an experiment and asked her to go to school by herself and go home by herself in the evening. This way, I could easily find out her schedule for the day. I secretly changed my clothes and began to follow my girlfriend for the day. My girlfriend was normal all morning, going to class and staying in the research lab to write reports. Around 3 pm, my girlfriend rushed to the professor's research lab. She raised her hand to knock on the door, but suddenly the door opened, and a hand reached out and pulled her in, peeking out to see if anyone was around. That fat, ugly face was my girlfriend's professor.

After my girlfriend was pulled in, the professor locked the door. To find out what was happening to my girlfriend inside, I took a risk. I secretly climbed onto the ventilation window near the door and jumped onto the vent of the air conditioner in the professor's study. What I saw almost made my nose bleed. My

girlfriend, Shifan, was completely naked from the waist up, her hands cuffed behind her back at about her waist. The cuffs were connected to a collar around her neck by a chain, leaving her perfect, fair upper body completely exposed to the professor, unable to resist. She was wearing tight, low-cut jeans, but without a top, the edge of her sexy black thong was showing along her waist, highlighting her fair skin and full breasts, making her look even more lewd.

The professor was completely naked, with a disgustingly large belly, but his huge, dark, almost black, penis stood erect, seemingly swaggering. My girlfriend, with her long hair down, kept her head down, not daring to look at the professor. The professor walked behind her and grabbed her breasts, kneading them repeatedly. She struggled and twisted, but couldn't resist. Because I was lying near the air conditioning vent, and the research lab seemed to have soundproofing, I could only see what was happening inside and couldn't hear anything. I only saw the professor whisper a few words in my girlfriend's ear, and she slowly nodded. The professor then gently pressed her shoulders, and she slowly knelt down. The professor grabbed her head and pressed it down forcefully. She opened her lips and took his penis into her mouth, stroking it back and forth.

Seeing this, my heart broke. In the past, when I made love with my girlfriend, she always refused to give me oral sex, thinking I was dirty. She was a germaphobe, and now she was giving the professor oral sex. But I had a strange feeling, and my genitals started to throb. I simply pulled out my penis and, faced with this scene, helplessly began to masturbate. My girlfriend knelt before the professor, her hands cuffed behind her back, secured by a collar around her neck. The scene was incredibly lewd. The professor, while enjoying oral sex, fondled her breasts. After a while, he suddenly pushed her away, grabbed his penis, and ejaculated onto her snow-white breasts. Thick semen slowly trickled down her chest. My girlfriend

gasped for breath, but the professor wouldn't let her go. He grabbed her arms, helped her up, and carried her to the table. First, she lay face down on the desk. He pulled down her low-waisted jeans, revealing a black thong that accentuated her fair, shapely legs. The professor, however, had no time to appreciate the sight. He forcefully ripped her thong, his erect penis throbbing, and thrust it in. Seeing this, I felt a pang of sadness. My beloved girlfriend had finally been conquered by this beast. At first, my girlfriend was just being thrust into from both ends, her long hair flowing freely. But later, the professor went faster and faster, and she started opening her mouth, making incoherent noises. Her hands were held by the professor, and she could only writhe, seemingly aroused by him. Finally, the professor suddenly pushed her down onto the floor and thrust forcefully a few more times, then roared, apparently ejaculating inside her. The ejaculation lasted for over ten seconds. At this point, tears welled up in my girlfriend's eyes, and she shook her head desperately, seemingly protesting.

After he finished, the professor stood up, satisfied, and looked at my girlfriend on the floor, her vagina slowly leaking semen. He then fed her mouthfuls of semen, which she couldn't resist, and ate them. Seeing this, I finally couldn't hold back and ejaculated as well. While the people inside were still catching their breath, I quietly slipped away, still unable to understand why my girlfriend had been taken by that professor. What had happened in Japan? And what kind of video had been taken and what kind of blackmail had she received? If I asked directly, my girlfriend, who was being held hostage by the professor, definitely wouldn't tell me. I felt I had to sneak into the professor's lab at night to find out. Unexpectedly, I discovered something even more shocking...

Chapter Two: The Japanese conference

was located downstairs from the department building where my girlfriend, Shifan, was studying. Based on my observations, the department building doors were locked at night, and only graduate or doctoral students had access passes. After stealing my girlfriend's pass, I quietly returned to the school around 1 or 2 AM.

After swiping the key, I sneaked into the professor's lab. Of course, the door was locked. I took a locksmith's tools, quietly opened the lab door, entered, and then locked the door behind me.

Now I had plenty of time to uncover the secrets between the professor and my girlfriend, Shifan. First, I rummaged through the professor's drawers, only finding some normal, ordinary papers or reference books, Chinese and foreign academic papers and journal articles, etc.

I had no choice but to open the professor's computer to see if there were any secrets inside.

The desktop was filled with program and data files, everything seemed so normal. I had to open each folder one by one to check for anything unusual. Suddenly, in a folder titled "Student Profiles," I found many files. With trembling hands, I slowly opened a folder named Shifan. It contained many files, including pictures and videos. Looking at the pictures, the first one was of my girlfriend wearing a white shirt and black skirt, giving a speech at a conference, apparently in Japan. Next were photos of the second and third days' schedules, all of my girlfriend attending meetings or giving presentations. The fourth day's photos were of the end-of-conference banquet. Hmm? It seemed to be going smoothly. The four-day conference was over, so why did Shifan tell me it wasn't going well and needed to be postponed? Then came photos of my girlfriend at the banquet, wearing a black low-cut, revealing evening gown, definitely the center of attention. Many foreigners came over to take photos with my girlfriend. Even that lecherous professor got a few photos with her, but they were all very close, with his arm around her shoulder or waist, and quite tightly!

The next photos shocked me. The date was the day after the seminar ended, the day my girlfriend told me she was postponing her return. The photos showed my girlfriend, Shifan, by the hotel pool, wearing a hot pink bikini, lounging seductively on a lounge chair, looking at the camera with alluring eyes. I guessed the professor took the photos. The next few were all in the pool, showing my girlfriend's wet hair, her ample breasts, and her fair skin. I stared, completely stunned. Then the photos stopped. I nervously clicked on the video file. The video started in a hotel room, and it seemed the camera was set up next to the bed, capturing every corner of the room. What made me a little nervous was that there was an octopus chair in the corner of the bed. Although Japan is the leader in the sex industry, a first-class hotel shouldn't have such a facility. Did the professor later specifically take his girlfriend to find this kind of motel? What was his intention? My doubts didn't last long. Soon I saw a girl with long hair, wearing an ill-fitting white men's long-sleeved shirt. The semi-transparent white shirt was unbuttoned, and she wasn't wearing a bra, leaving her upper body half-naked. The length, past her waist, vaguely covered the extremely sexy black briefs at the hem. That beautiful figure and face were indeed Shi Fan. Next, a bloated middle-aged man, wearing only shorts, quietly walked over to his girlfriend, put his hand on her shoulder, and said, "Come on! Xiao Fan! Look at the camera, this is the angle!" His girlfriend shyly pleaded, "Can we please not take pictures?" The professor said, "Xiao Fan! I want to see you clearly, to keep as a memento." His girlfriend, still somewhat reluctant, said, "But we still have to see each other afterward, and the professor will have to take your classes. It'll be so awkward." The professor said, "No, I won't let it slip out. Only you and I will know. Okay, let's get started!"

With that, the professor sat on a sofa chair, crossed his legs, and looked at his girlfriend with obvious enjoyment. His girlfriend gently licked her lower lip towards the camera, slowly peeling off her shirt, letting it slide down her shoulders. Her perfect curves were thus revealed to the professor. As her boyfriend, I had never seen such a seductive sight before. The professor gently gestured, and Shifan slowly placed her hands behind her head, allowing the professor to admire her perfect curves without any obstruction. Wearing only a sexy black sheer panty, she was stared at by the professor for quite a while. The professor pulled down his pants, revealing his erect, black penis, and said to Shifan, "Crawl over here!" Hearing this, his girlfriend obediently crawled on the ground, like a dog, her full breasts even more prominent due to the position. She crawled over, placed her hands on the professor's lap, who was sitting in a chair, and began sucking on his penis like an ice cream cone. The professor enjoyed this beautiful female student giving him oral sex, occasionally tossing her loose hair upwards, seemingly trying to see Shifan's expression.

Finally, the professor helped his girlfriend up. She stood in front of him, and the professor, seemingly unable to restrain himself, forcefully ripped her panties with a loud "rip." The girlfriend trembled slightly from the sudden action. Then, without any hesitation, the professor helped her onto a nearby octopus chair, making her lie face down on it. He thrust his penis in with a swift motion. The girlfriend let out a soft cry, her voice a mixture of unease and a hint of pleasure.

At first, the professor moved in and out gently, but as he continued, the rhythm gradually quickened, and the force increased. The girlfriend's reaction was the same; her body honestly reflected her desire. At first, she only breathed softly through her nose, but later it became a loud moan. The professor verbally humiliated her as he fucked her: "You slut! You seem so innocent and obedient, but I think you're just a whore who needs to be fucked. Just as I expected... I'm going to fuck you to death today..." His girlfriend, shaking her head and panting, said, "I... I'm not a slut... Ah... It's all because you forced yourself on me, Professor..." "Damn it... You still say you're not a slut? Then why are you here being fucked by me? When you first came to me to be your advisor, I was attracted to your slutty nature... I've always wanted to get my hands on you. See, now I've got you, haven't I? Hehehe..." It turned out the professor had ulterior motives when he took my girlfriend as his advisor. The professor became more and more excited as he fucked her, making her drip with juices. "Professor... you're so bad... So you... oh... ah... you've always wanted to get my hands on me... that's why you took me as your student... You... you're killing me... Ahh... I'm going to die..." His girlfriend was being fucked from behind by the professor, panting heavily, her hair flying up and down. "Hurry up, you slut, call me husband..." "No... I don't want to... I have a boyfriend... Ahh... You're killing me... Stop... No..." "Slut... You have a man and you're still letting me fuck you... Are you a prostitute? You slut, watch how powerful I am!" The professor suddenly turned his girlfriend around, making her lie on the chair. He thrust hard, and the force of his thrusts made me a little worried that my girlfriend would be fucked to death. My girlfriend cried out frantically: "Ahhh... I'm going to die... Teacher... No no... Husband... Spare me... I'm going to die... Please let me go... Ugh... Ah..." After the final thrust, the professor roared and forcefully ejaculated inside my girlfriend, thrusting as he ejaculated. I started to worry that my girlfriend would get pregnant.

The scene afterward showed the professor taking his girlfriend inside to take a shower. The camera didn't capture it, but they didn't come out for a long time. I could imagine what they did to my girlfriend inside.

After a while, the girlfriend came out with wet hair and only a towel wrapped around her upper body. Behind her, the professor, also completely soaked and without underwear, came out, sat on the edge of the bed, and pulled the girlfriend into his arms. Surprisingly, the girlfriend didn't resist and was held in his embrace. The professor asked the girlfriend, "Did you feel comfortable just now?" The girlfriend lowered her head shyly and nodded. The professor then asked, "So, did you agree to my request? I'll help you get through this, and you'll break up with your boyfriend and become my mistress, how about that?" The girlfriend said, "But... my boyfriend is very good to me. How about this, I won't break up with him, but I can agree to your request. After I go back to China, I can stay at your place, but I still need to visit my boyfriend a few times regularly, is that okay?" What?! Since returning to China, the girlfriend hadn't been living with the professor but had moved in with him! Good heavens! Had I been kept in the dark?! The girlfriend wasn't being coerced; Shi Fan had actually agreed to the professor's shameless exchange. The professor said, "Alright! I'll have to be lenient. But I want to be your top priority, you know? Okay, so for the next two years, I expect you to keep your promise!!" He then took out a piece of paper and had his girlfriend sign what looked like a contract. After she obediently signed, he couldn't resist kissing her again. Their tongues intertwined, and he slowly pulled off her towel…

I sat in front of the computer, thinking I should give up on Shifan, but I loved her too much. Knowing this, if I told her, we'd definitely break up. I could only helplessly pretend I didn't know. Did I have to turn a blind eye and let my girlfriend and the professor have this perverse relationship for two years? I was deeply troubled. I decided to observe for a while longer. I burned the video and took it with me. I left the school and returned to my apartment. My beautiful girlfriend was sleeping sweetly in my bed.

Chapter Three: The Mark

Since my girlfriend, Shifan, agreed to the sexual deal with her advisor, I chose to continue pretending I didn't know, because I didn't want to lose her.

In the days that followed, I noticed many changes in Shifan in bed. Many times during sex, she, who used to dislike oral sex, suddenly became very skilled at it. She, who was always shy in bed, suddenly became very seductive and wanton. Many positions she used to be embarrassed about, she now enjoys more and more. Is this thanks to the professor?

And every time I have sex with my girlfriend, the image of the professor's large penis going in and out of her always flashes in my mind, along with her moans and groans. This always makes my penis swell even more, and I thrust harder and more vigorously. That strange transformation from a mixture of anger and jealousy into another emotion makes me incredibly excited—a feeling I don't even fully understand.

However, there's always one thing that bothers me: since we started dating, my girlfriend has always been very strict about it. She never lets me enter her without a condom, let alone ejaculate inside her. However, based on the videos and photos I later stole from the professor's computer, it became clear that the professor not only didn't use a condom when penetrating my girlfriend's vagina, but also ejaculated inside her more than once. In other words, I never directly touched my girlfriend's vagina with my penis; instead, the professor's penis was always sucked by my girlfriend's vagina after her orgasm until he ejaculated. So, who was the real boyfriend?

This made me uncomfortable. In short, because of my restraint, things were peaceful for a while.

Unfortunately, things always come to an end.

One afternoon, my girlfriend called me, saying she would be late to my house because she had a meeting that afternoon. Of course, I had a bad feeling; my sixth sense told me that it was definitely her advisor keeping her behind to seduce her again.

After finally finishing my experiments at school, I rushed back to my rented apartment. As soon as I got back, I heard the sound of running water from the bathroom. It turned out that my girlfriend, who hadn't come to my house for many days, was taking a shower in my bathroom.

I was so excited to finally have my girlfriend at my place. I excitedly stripped off my clothes, quietly opened the bathroom door, and rushed in. My girlfriend was washing her hair. Her long hair, which used to hang down past her shoulders, was now tied up in a ponytail, revealing her entire neck and back. The bathroom was filled with steam. I immediately went over and hugged her waist from behind. My girlfriend was startled by my sudden action. When she turned around and saw it was me, she quickly crossed her arms and squatted in the corner facing me.

I found her unusual behavior very strange: "Shifan, what are you doing? It's me! Let's take a shower together! Come on..." As

I approached my girlfriend, she blushed unusually, crossed her arms, and stammered, "No... don't come closer, I can wash myself... you should go out first!"

I said, "Why are you like this? Come on, why are you so nervous? It's not the first time. Come on, let me wash your back. Come on, turn around..." As I said this, I pulled up a small chair for my girlfriend to sit down, but she still crossed her arms and refused to turn her back to me. I was getting impatient, so I forcefully turned my girlfriend around and picked up the soap to wash her back.

Suddenly, I was stunned when I saw her back. Her once smooth, white back now had a six-pointed star tattoo on the back of her neck. It was hidden when her hair was down, but visible when it was tied in a ponytail. But what surprised me even more was that near her hips, about the edge of the waistband when she wore a bikini, there were two words tattooed: "slut." Although they weren't usually visible, they would be seen if she wore a swimsuit or any short, cropped top.

Shocked, I turned her back over and demanded to know what had happened, but she kept her head down, her face flushed, and refused to say anything. Pressed by my questions, my girlfriend finally blushed and slowly opened her arms, revealing her perfect breasts. I was so surprised I jumped up. Right on the edge of her full, plump right breast, just around the top of her bra cup, was a small "Liu" tattooed. Although it was small, it was only faintly visible when she wore thin straps or low-cut tops, but it was clearly visible when she wore a swimsuit.

Seeing that "Liu," I immediately thought, "It's that perverted professor, Professor Liu, again!"

I angrily demanded to know what had happened! At first, she begged for my forgiveness, and seeing her so pitiful and on the verge of tears, my heart softened, and I wanted to forgive her. But those tattoos, especially the "Liu" on her chest, pierced my heart. I immediately demanded that she tell me the whole story.

It turns out that I've been incredibly busy lately, and my girlfriend, except when she's at school, has been kept by the professor's side. When he's in a good mood, he'll strip her naked and ravish her. In the research lab, at the professor's house, and even worse, once he went to her dorm at school and brutally raped her.

Another time, the professor dragged my girlfriend to a pub for drinks. He got carried away and kept pouring her drinks. She's a light drinker, and after a few glasses, she

was completely drunk. "Professor... I can't drink anymore..." she said, pushing away the glass he offered.

"Shifan, hurry up and finish this glass, it's the last one. I'll take you home after you finish."

She tried to refuse, but the professor pinched her nose and poured the drink into her mouth, spilling half of it on her.

After finishing the drink, the girlfriend could no longer hold on and began to stagger. Seeing her drunken state, the professor's lust was aroused again. He said to the bartender, "Get me a room, quick!"

The bartender hesitated, noticing the girlfriend looked to be only in her early twenties, dressed in a black sheer dress. He felt the couple didn't look like lovers, nor father and daughter, and the professor hesitated. Sensing the bartender's hesitation, the professor slipped him a tip, and the bartender obediently led them upstairs to a room.

The professor threw the girlfriend on the bed, stripped her naked, and eagerly began thrusting. The drunken girlfriend, half-asleep, was brutally fucked by the professor.

Perhaps due to the alcohol, the professor couldn't ejaculate. In desperation, he picked her up, positioned her on all fours with her back to him, grabbed her hands and pulled her back, and began thrusting into her forcefully, like riding a horse.

His girlfriend, sobered up considerably from his vigorous thrusting, turned around and saw the professor having sex with her. Waves of pleasure washed over her, and she cried out lasciviously, "Professor...good husband...darling husband...don't be so rough...I'm going to break...have mercy on Xiaofan...oh..."

Hearing Shifan's cries, the professor's desire intensified. Soon, he felt a tingling sensation in his penis, forcefully flipped her over, lifted her legs together, and thrust in a few times, forcefully ejaculating inside her. His girlfriend, still drunk and dazed from the penetration, cried out wildly, oblivious to the professor's ejaculation. Afterwards, the professor didn't pull out, leaving her inside, and the two fell asleep lying on their stomachs.

The next day, the girlfriend woke up to find herself naked. She got up to check and found her phone, wallet, and clothes gone, leaving her completely naked in the room. She couldn't escape the hotel, nor could she call for help.

Not long after, the professor returned and casually tossed a set of clothes to his girlfriend: "Shifan, I'm taking you somewhere now, let's go!"

The girlfriend trembled as she put on the clothes and nervously asked, "Professor, where are we going?"

The professor looked at his girlfriend and lewdly said, "Xiaofan, you've already agreed to be my sex slave until you graduate, so now I have to completely possess you! Not only do I have to completely possess you, but you also have to declare to everyone that you belong entirely to me, don't you?" After saying that, he pulled his girlfriend into the car, drove for a while, and stopped in front of a dark shop.

The girlfriend got out of the car in fear, only to find it was a tattoo parlor. She looked at the professor with a puzzled expression

, and he pulled her inside. Inside was a large bed and a middle-aged tattoo artist covered in tattoos. As soon as he saw the professor approach, the artist grinned wickedly and said, "Old Liu, bringing a new girl again this year? What was last year's girl's name... oh... Xiaoqi? Her figure was unbelievable, and her face was gorgeous too. What? Is she your new girl this year?"

The girlfriend was shocked. Xiaoqi was a senior who graduated last year. Had she also been the professor's sex slave? How could Xiaoqi, who seemed so quiet and well-behaved, be like this…

The professor smiled and pulled his girlfriend over, saying, “Look, this is my newest find this year. What do you think? Her face is beautiful, that goes without saying. This girl has a hot body, fair and smooth skin, and a sweet voice. I can feel her sultry nature; once you start, you can’t stop. She’s the best I’ve gotten in years. What do you think?”

The tattoo artist, hearing the professor’s description of my girlfriend, licked his lips, looked her up and down for a moment, and said, “Is she really that amazing? Hehe, Lao Liu, I’ll have to try her out later…”

The professor said, “What’s the problem? Hahahaha…” The two laughed heartily.

My girlfriend stood there nervously, unsure what to do.

The instructor said to his girlfriend, "Little sister, your name is Shifan, right? Come on, don't be afraid. Your teacher likes to mark his girls so he can tell you're one of his women too. Come on, take off your clothes and lie down on this bed, hurry up!"

The girlfriend hesitated for a moment, and the professor pushed her from behind, saying, "Hurry up! Take off your clothes, completely naked."

The girlfriend slowly removed all her clothes, revealing her beautiful and alluring young woman's figure. Her figure wasn't slender; on the contrary, she was a full-figured girl, a little fleshy but definitely not fat, with proud breasts and a pert bottom, making the instructor swallow hard.

The girlfriend obediently lay on the bed. The tattoo artist said, "Little Shifan, I'll tattoo a few designs your teacher wanted on your body in a bit! It might hurt a little the first time, but please relax."

Hearing that she was going to get a tattoo, the girlfriend tried to get up to protest, "Teacher, I don't want to... I'm a good girl, I'll be obedient, but I don't want a tattoo, my boyfriend will see it..."

The professor ignored her protests, giving the artist a look. The artist took out handcuffs and cuffed the girlfriend's hands and feet to the bed, patting her back to soothe her, "Don't be afraid, little girl, it won't hurt much, it'll be over in a minute. Don't move or struggle, otherwise I'll get a bad mark, and it will look ugly. This can't be corrected, so stay quiet and don't move."

Afraid of getting a bad mark and leaving an ugly scar, the girlfriend could only silently lower her head, tears welling in her eyes.

The tattoo artist first tied her hair into a ponytail and tattooed a six-pointed star on the back of her neck and shoulder. The girlfriend endured the slight pain, only letting out a few soft cries. Fortunately, the tattoo artist was skilled, and the girlfriend didn't feel much pain.

Next, the artist prepared to tattoo her waist near her hips, asking the professor what words she wanted. The professor thought for a moment, then suddenly smiled wickedly: "This girl usually looks decent and honest, but for some reason, I get incredibly excited and aroused whenever I see her. In bed, she's so slutty and wanton, a complete little slut. Everyone needs to know that, so you can tattoo 'slut' on her."

Hearing that such an indecent word was about to be tattooed on her body, the girlfriend worried about what would happen if she wore a swimsuit or a short top that exposed her waist at the beach! Wouldn't people see those two words? So, the girlfriend protested loudly in fear: "No! Stop! Don't tattoo that word..."

Ignoring her protests, the artist held her down to prevent her from struggling, and with steady, skillful hands, slowly tattooed those two humiliating words onto her fair skin. When the girlfriend realized she would definitely have those two words tattooed on her, the humiliation she felt exploded. She couldn't hold back her tears any longer and gave up struggling, letting the beastly professor instruct the tattoo artist to do whatever he wanted to her.

But the professor wasn't satisfied. He told the tattoo artist, "This girl is the best I've ever had. I want to possess her forever and have my way with her. I think I need to do something different from the other girls. Tattoo the character 'Liu' on her chest."

Knowing the professor's perverted idea, the tattoo artist turned the girlfriend over. Her hands were cuffed, and she had already given up resisting, silently enduring the tattoo artist tattooing the character "Liu" on her breasts. After

it was all over, the tattoo artist applied Vaseline to the tattooed area, wrapped it in plastic wrap for protection, and gave instructions on what to be careful about afterwards. The girlfriend lay quietly on the bed, seemingly oblivious, her face as white as a sheet, staring at the ceiling, tears streaming down her face.

The tattoo artist, seeing his girlfriend's beautiful figure and pitiful appearance, couldn't resist his lust and asked the professor, "Old Liu, may I try your chick?"

The professor replied, "We're already so familiar, so don't be shy!"

Hearing this, the tattoo artist excitedly stripped off his clothes and said to his girlfriend, "Little sister Shifan, did you hear what your teacher said? Crawl over here and give me a blowjob! Hurry up..."

The girlfriend seemed to have lost the ability to resist and obediently crawled over, holding onto the tattoo artist's penis and sucking hard. The master exclaimed excitedly, "Oh...oh...unbelievable! Your oral skills, oh...are you really a graduate student? You're even better than the prostitutes outside...I'm so turned on..."

The professor said smugly from the side, "She's all thanks to my training. I guide her every day! Not just academically, but I also train her very hard in this area! Hahaha..."

The master couldn't take it anymore, so he turned his girlfriend over, rubbed and squeezed her breasts from behind, and then made her put her hands on the edge of the bed and started having sex with her from behind. While fucking her, he asked his girlfriend, "You little slut, are you enjoying it?"

His girlfriend moaned and groaned, "Mmm...mmm...I feel so good! I'm so happy..."

The master asked again, "Is my penis big?"

"Big...so big...fuck me to death...I'm going to die...stop it..."

The master said smugly, "Damn, you look so innocent and pure when you're dressed, damn, the moment you take your clothes off and my penis is inside you, you become so slutty. You really are a slut. Come on, answer me, are you a slut?" He then thrust hard into his girlfriend.

His girlfriend seemed to have lost consciousness: "I am. Fuck me to death...I'm a slut..."

The master laughed loudly, "Good, hahaha! You really are a little slut, let me show you now..."

The master held his girlfriend's buttocks and forcefully performed his nine shallow thrusts followed by one deep one. Eventually, his girlfriend gradually matched the master's rhythm, moving her plump buttocks back and forth, allowing each thrust to reach deep inside.

Not long after, the professor, also starting to pant, flipped his girlfriend over and shoved his penis into her mouth, ejaculating all over her esophagus, causing her to cough.

Satisfied, the professor then took his girlfriend home and continued his vigorous sexual activity. According to his girlfriend, ever since the tattoo, the professor became incredibly excited whenever he saw the words during sex, and his demands for sex became increasingly frequent. He even asked her to go on a week-long trip abroad with him…

Hearing my girlfriend's account, I stood there, stunned, a thought of revenge slowly rising within me…

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