Having an affair with Senior Sister Rong in the research lab

page views:1 Publication date:2023-03-23

Rong was a year ahead of me, but five years older. She was petite with a cute face and dimples, and despite her small stature, she had a great figure and excellent grades—a truly perfect woman. However, perhaps because she was much older than her classmates, I never heard any rumors about her during our four years of university. Instead, she was a popular senior among her classmates and younger students.
After graduating from our department, Rong went on to graduate school at the same university. Because there were few people in our department, and Rong and I shared common interests, we got along very well. Even after she went to graduate school, we kept in touch because it was at the same university. I often went to Rong's lab to chat and discuss our shared favorite anime and comics. When I had academic problems, Rong always readily helped me, and I helped Rong with computer problems. Although we shared common interests and topics, perhaps it was because Rong was much older than me! Therefore, even though I was notorious for being a womanizer in the department, I had no romantic feelings for Rong...
After graduation, besides saying goodbye to the teachers, I certainly wouldn't forget to say goodbye to this senior who had taken such good care of me. I gently pushed open the door to Rong's research room and saw that her computer was on, but she was asleep on her desk because she was tired. Because Rong had only been sleeping for a short time, she wasn't very sleepy yet. She woke up after I entered, and after seeing that it was me, she nodded to me as usual, telling me to make myself at home, and then continued to sleep. Because Rong was so tired, I felt embarrassed to ask her to chat with me, so I focused on typing on the BBS. After typing for a while, I glanced at Rong next to me, and good heavens! I hadn't noticed her because she was wearing a coat, but it slipped down and I saw that she was wearing a collarless, sleeveless, pure white dress. Perhaps because it was hot today, Rong was actually wearing a pure white dress. What surprised me even more was that Rong was wearing a deep purple bra today. Staring blankly at Rong's back, the thin white fabric couldn't conceal the purple bra underneath, making me swallow hard. I mustered my courage, quietly got up, and squatted down next to Rong to observe her sleeping posture. Looking down, although Rong was petite, her proportions were quite good. From the side, I could see the cleverly curved lines of her chest. Because it was sleeveless, I could see the outline of her bra and how it encased her breasts. Looking further down, I saw that the dress was a mini-skirt, revealing more than three-quarters of her thighs. I became even bolder, lowered myself, and looked between Rong's legs, which weren't quite closed. My senior's small panties were also deep purple, with one or two cute pubic hairs peeking out, making me even more aroused. But since Rong and I were just senior and junior classmates, and she was so nice to me, how could I possibly take advantage of her while she was sleeping… So I forced myself to suppress my desire and went back to my seat to continue typing on my BBS, but I couldn't concentrate…
About half an hour later, Rong woke up, rubbed her sleepy eyes, and started chatting with me. Since I had already graduated and was about to leave school, the conversation inevitably turned somewhat sentimental and revolved around my future plans. Although we were chatting, I was completely distracted because my mind was filled with thoughts of the glimpse of Yini that I had just seen. My mind wandered, and as I watched Rong's cherry-colored lips open and close, I actually had an urge to shove my penis inside her. Thinking of this, I quickly shook my head to banish the filthy thoughts from my mind. Rong was a senior, not a girlfriend!
As we chatted, I blurted out something I'd never even considered: "Senior, can I have a kiss as a graduation gift?"
Rong paused, seemingly shocked, but still managed a smile and asked, "What did you say?" I figured since I'd said it, I shouldn't be afraid, so I repeated, "Senior, I want a kiss from you as a graduation gift, is that okay?" Rong
seemed to have heard me clearly, and was even more shocked, but still forced a smile: "Don't joke with me like that, senior."
I, however, maintained a resolute expression, indicating I was serious.
Rong looked at me for a moment, then smiled awkwardly: "Sure! If it's just a kiss..." and turned her face towards me, wanting a kiss, but I didn't want a kiss on the cheek, I wanted Rong's lips.
I reached out my right hand and gently held the back of Rong's head, my lips moving towards Rong's. By the time Rong realized something was wrong, it was too late; my lips were already on Rong's lips. Rong panicked and tried to pull away, but as soon as she managed to open her lips, my tongue was inside her mouth. Rong tried to push me away, but I held her hands firmly with my left hand, unable to move.
I forcefully guided Rong into a deep kiss. When our lips parted, Rong gasped for breath. Between gasps, she asked me, "How come..." Seeing Rong's chest heaving with her breath, I could no longer restrain myself. I pulled her close, kissed her lips again, and began to knead her breasts with my left hand.
Rong seemed startled by my actions, struggling desperately to push me away, but I held her even tighter, kneading her breasts with increasing force. After a brief struggle, Rong's struggles weakened, and she gradually softened. My lips left hers, and I began to gently kiss her cheeks, earlobes, and neck.
Rong seemed quite pleased with my shift from rough to gentle, gradually letting out soft moans, and offering no resistance, allowing me to treat her tenderly. My kisses gradually moved downwards...
I buried my head in Rong's cleavage, inhaling her scent deeply. My right hand embraced her from behind, while my left hand slipped under her skirt, caressing her thigh. Rong held me tightly for support, moaning softly. Because my face was buried in Rong's cleavage, and she was holding me so tightly, my face was completely pressed against her two full breasts. The alluring scent of her breasts and flesh fueled my desire even more. My right hand fiddled with Rong's back through her clothes, unhooking her bra. Although she couldn't take it off completely because her outer garment was still on, I had indeed unhooked it. If I pulled down her outer garment, taking off the bra would be quite easy. My left hand gently caressed Rong's genitals through her panties, pressing her index, middle, and ring fingers together against her vulva through her panties.
Rong's moans and gasps grew more intense with my next move: "No...no...I can't...junior...stop it...there are...there are people outside the research room...ah..." Rong said this, but hugged me even tighter. Although my left hand was through her panties, I could feel that Rong was already wet with her juices, the honey-like fluid wetting my hand through her panties. I gently parted her panties with my left hand and rubbed her wet vulva directly. Unable to bear the tickling, Rong moaned softly in my arms, begging for mercy...
I lifted my face from Rong's full breasts and whispered: "Senior...you're all wet...
um...you're so mean...it's all your fault...you bad junior..." Rong blushed and said coquettishly.
I reached under Rong's skirt and slowly lifted her up. I sat on Rong's chair, pulling my engorged penis from the zipper of my summer suit trousers. Rong sat astride my lap with her back to me, and I gently held her. Rong obediently cooperated.
I slipped my hands under the zipper of Rong's back, gently squeezing into the gap of her unhooked bra, one in each hand, gently grasping Rong's breasts and kneading her full breasts. My fingers gently rotated her nipples, while my mouth kissed Rong's earlobes, neck, shoulders, and arms from behind. My engorged penis rubbed against Rong's buttocks through her skirt. Rong let me do as I pleased, closing her eyes to enjoy my caresses and kisses. Following her body's instincts, her soft moans grew louder... Rong's moans further aroused my desire, and the movements of my hands and mouth became increasingly intense.
The burning desire within me could no longer be contained. I abruptly pulled down Rong's clothes. Rong seemed to awaken from a dream, trying to resist me, but she was restrained by my embrace and her body's instincts. Her resistance grew weaker and weaker, and I removed her dress. Her bra had long since slipped off her large breasts under my pressure. Rong was only wearing purple panties soaked with her juices, her half-naked, fair, and curvaceous body incredibly alluring.
I marveled at Rong's figure; apart from her height, it was truly flawless. Her abdomen was without an ounce of fat, and her waist was slender. The light brown nipples on her full breasts were swollen and erect from the previous caresses. I picked Rong up and gently leaned her against the table, kissing her lips again. Rong responded strongly to me.
Our tongues intertwined for a long time before my lips landed on Rong's left breast. My hands then caressed Rong's right breast and gently pulled down her panties to her knees. My hands lightly played with her vulva, parting her labia and inserting my fingers into her vagina, making soft, squelching sounds as I increased the speed of my movements. Rong gripped my shoulders tightly, trembling all over as she could only grit her teeth, daring not to groan loudly: "Ah...ah...stop...don't...don't go so fast...no..."
Only after I pulled my fingers out did Rong, panting, reveal a sexy smile, and slowly speak: "Bad junior...you're so bad...you've made me like this...I...I'm feeling it..." The lewdness in her voice surprised me even more. Was this the Rong senior who always gave off a gentle and dignified feeling?
Rong's sexy smile: "What's wrong...junior...aren't you going to continue?"
I was stunned for a moment by the unprecedented smile on Rong's face: "What
bad junior...you can't stop even if you want to..." Rong uttered these surprising words in that sexy and lewd voice.
I could only stammer a response: "Oh..."
Rong completely removed my underwear, which had been pulled down to my knees, jumped off the table, squatted down, and pulled off my pants and underwear. She gently pushed me into a chair, then hid under the table, gently grasped my penis with both hands, and took it into her mouth, performing oral sex on me under the table. A warm sensation enveloped my penis; although it wasn't fully inside, it was already more than three-quarters inside. Her head began to move back and forth. When she took in less of the penis from behind, Rong would gently lick it with her tongue, but after a few licks, she would immediately withdraw her tongue and take in more of it from behind, repeating this process. The pleasure intensified the moment Rong licked it with her tongue. Even when Rong's small mouth left my penis and took my testicles in, slowly rotating them, that feeling was heavenly.
I was almost overwhelmed by Rong's oral service and was about to have some real sex with her when, knock knock knock... there was a knock on the door. Rong and I were both startled and didn't dare to move. Luckily, Rong was hiding under the table, so even if someone came in, if I handled it properly, they shouldn't notice for a while.
"Little Rong..." With the sound, the door was pushed open...
and in came Zi Lin, Rong's senior from the same research lab. Compared to Rong's height of less than 160cm, the 168cm senior Zi Lin seemed much taller. Zi Lin's outfit today was also very revealing, a pale yellow dress with thin straps, and looking at her shoulders, there was a transparent strap. She was probably wearing a bra specifically for thin-strapped bras. The dress was much longer than Rong's. She was carrying a long red shirt, which she probably used as an overcoat, and wearing high-heeled sandals.
Because I often visited this research lab, Zi Lin recognized me. Zilin saw me and smiled, nodding: "
Junior, graduated? Congratulations!" "By the way... have you seen Rong?"
I was still wearing my upper clothes and sitting in a chair, so it wouldn't seem too strange if I was just sitting at Rong's desk reading.
I tried to sound calm: "No...no!" "Oh...she went out earlier."
Seeing my flushed face and nervous demeanor, Zilin wondered what was wrong and asked with concern: "Junior, are you alright? Your face looks so red, do you have a fever or something..." and walked over.
I panicked even more and quickly said: "No...I'm fine!"
Seeing that I was fine, Zilin smiled: "Hmm...it must be too hot..." and turned to leave. Before leaving, she told me to tell Rong to leave in half an hour when she returned, so she wouldn't be late.
I casually asked: "Are you guys going out to play
?" Zilin smiled: "Yeah...and to say goodbye to the graduating seniors." Then she left.
After Zilin left and closed the door, I breathed a sigh of relief, and Rong also breathed a sigh of relief. Emerging from under the table, Rong's desire seemed to have cooled considerably, perhaps because Zilin's sudden intrusion had deterred us from continuing. Although her face was still flushed and her breathing was still rapid, the desire in her eyes had lessened. However, seeing Rong naked made me even more unable to resist. I suddenly pushed Rong down, making her turn away from me, pressing her hands onto the table, her buttocks naturally sticking up. Rong struggled, saying, "No...no...I can't...outside...outside...Zilin is...Zilin is outside..." I didn't care about all that, thinking that Zilin was already gone, and besides, it was graduation day, so it was unlikely anyone would be in the lab. I smiled and said, "She's already gone...don't think too much."
I kissed Rong's back, then gently spread her fair and tender buttocks from behind with my left thumb and forefinger. The spring scenery of the girl's private paradise was completely exposed. Sparse pubic hair, tender and moist labia, her private parts were all exposed to me at once, making Rong extremely shy. Her pretty face turned red, and she pushed away with both hands, trying to break free from my control. I held her tightly, not letting the cooked duck fly away. My eyes feasted on Rong's tender pink vulva, and my right hand guided my hard penis, placing the glans against her already wet opening. I didn't rush to insert it, but instead gently caressed and teased Rong's two delicate, moist labia with the glans... This teasing made Rong's lower body unbearably itchy, and her delicate body trembled slightly... She couldn't help but turn around and ask me for a kiss and to fuck her...
I gently pushed my swollen, large glans between Rong's wet labia. Perhaps sensing the impending invasion of my large penis, Rong was both ashamed and anxious. I slowly pushed my penis forward, and with a soft "plop," the glans passed through Rong's vulva, slid past the fleshy crease between her labia, and the entire penis slid in, penetrating Rong's vagina and filling her vulva.
Ah...ah...ah...as I penetrated her, Rong couldn't help but cry out softly. My big cock sealed her lower body's little hole, and then I kissed her sweet lips with my tongue. The gentle, graceful, and sexy Rong swayed her slender waist, her peach-shaped buttocks welcoming my penetration. The moment I entered Rong's body, a warm, tight embrace enveloped my penis. Although Rong's vaginal fluid hadn't dried up yet, it was much less than before, so when I thrust my big cock into Rong's body, the lubrication wasn't quite enough. Therefore, although it still slid in smoothly, I felt a bit of resistance. In this semi-wet state, the friction was even more intense. This intense pain and pleasure made Rong cry out. Rong started panting, but because it was in the research room, there might still be people outside, so she didn't dare to scream too wildly, only humming softly.
Ugh...After my big cock entered Rong's vagina, Rong finally let out a soft gasp. I placed my hands on Rong's waist, and began to slowly sway my hips back and forth. Rong's shapely buttocks swayed back and forth with my thrusts, and with each sway, my penis penetrated her again and again. Ah...ah...ah...Rong continued to pant softly, her voice growing louder despite her best efforts to suppress it.
Simple thrusting was no longer enough to satisfy my lust, so I moved my hands from behind her back to her chest, kneading her breasts vigorously. This combined stimulation gave Rong even greater pleasure, and she couldn't withstand the double stimulation. Ah...mmm...ah ah...her moans grew louder and louder... I placed my hands on Rong's waist again and gently pulled back, leaving only the head of my penis inside her vagina. Just as I was about to withdraw completely, I suddenly thrust forward with all my might, reaching the very end. Ah ah ah...Suddenly, the gentle thrusting turned into a violent impact. Caught between wanting to scream but not daring to, Rong let out a groan, then could only bite her lower lip, uttering broken moans. "Ah...slower...slower...slower...a little...I...I...can't take it anymore..."
I continued my violent thrusting, again and again, each time reaching the deepest part of Rong's body with a "slap! slap! slap!" sound. Rong's moans grew increasingly louder... After nearly a hundred forceful thrusts, I unconsciously let out low growls: "Rong...Rong...Rong..." repeatedly calling Rong's name.
"Ugh...ahhhhhhh...junior, junior, so good..." Rong's breathing became increasingly rapid, her whole body trembling violently. Feeling a surge of heat in my glans, I could no longer hold back, and I held Rong tightly, ejaculating my scalding semen completely into her body.

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