With my senior in the research lab

Rong was a year ahead of me, but five years older. She was petite with a cute face and dimples, and while short, her figure was perfectly proportioned. She was also academically gifted, making her almost a 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 graduated and went to graduate school, we kept in touch because it was at the same university.

I often went to Rong's lab to chat on BBK and discuss our shared favorite anime and manga. 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 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 I saw it when it slipped down. Perhaps because it was hot today, Rong was actually wearing a collarless, sleeveless, 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 bulge of her chest, and because it was sleeveless, I could see the outline of her bra covering 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, lowering myself to look between Rong's legs, which weren't quite closed. Rong's underwear was also deep purple, which made 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 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 BBK, but I couldn't concentrate... About half an hour later, Rong got 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 preoccupied with the scene I had just witnessed, so I appeared absent-minded.

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 that dirty thought. 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 already said it, there was no need to be afraid, so I repeated, "Senior, I want a kiss as a graduation gift from you, is that okay?"

Rong must have heard me clearly, and was probably even more shocked, but she still forced a smile: "Don't joke like that with your senior." I, however, acted resolute, indicating I was serious.

Rong looked at me for a moment, then smiled awkwardly: "Okay! If it's just a kiss..." and turned her face towards me for a kiss, but what I wanted wasn't a kiss on the cheek, but Rong's lips.

I gently placed my right hand on the back of Rong's head, and moved my lips towards hers. By the time Rong realized something was wrong, it was too late; my lips were already pressed against hers. Rong panicked and tried to pull away, but as soon as she managed to open her lips, my tongue slipped into her mouth. Her hands, which she tried to push away, were firmly held in my left hand, rendering her immobile.

I forcefully guided this deep kiss with Rong.

When our lips parted, Rong gasped for breath.

Between breaths, she asked, "What's wrong with you…?" Looking at Rong's heaving chest from her heavy breathing, I could no longer restrain myself. I hugged Rong tightly and kissed her lips again, my left hand beginning to knead her breasts.

Rong seemed startled by my actions, struggling desperately to push me away, but I held her even tighter, my left hand kneading her breasts with even greater force.

After a brief struggle, Rong's resistance 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 moved downwards... I buried my head in Rong's cleavage, breathing in her scent, my right hand encircling her from behind, while my left hand slipped under her skirt, caressing her thigh. Rong clung tightly to me for support, moaning softly.

Because my face was buried in Rong's cleavage and she was holding me tightly, my face was completely pressed against her two full breasts, which made my desire burn even more fiercely. My right hand, through the fabric, fiddled with Rong's back a few times, unhooking Rong's bra. Although the bra couldn't be taken off because her outer clothes were still on, I had indeed unhooked it. If I just pulled down her outer clothes, it would be quite easy to take off the bra as well. My left hand, through her underwear, gently caressed Rong's lower body, and I put my index, middle, and

ring fingers together, gently pressing Rong's vulva through her underwear. Rong's moans and panting became more and more intense because of my next move: "No...don't...no...junior...stop it...there are...there are people outside the research...ah~~" Rong said this, but hugged me even tighter.

And although my left hand was through her underwear, I could feel that Rong had already flowed with her juices, wetting my hand through her underwear.

With my left hand, I gently parted her panties and wiped her already wet vulva.

I lifted my head from between her full breasts and whispered, "Senior...you're all wet..."

"Mmm...you're so mean...it's all your fault, you bad junior..." Rong blushed and pouted.

I slipped my hand under her skirt and slowly lifted her up. I sat on her chair, pulled my engorged penis out of my summer suit trousers, and had Rong sit astride me with her back to me. I held her gently, and she obediently cooperated.

I slipped my hands inside Rong's unzipped back blouse, gently squeezing through the gap in her unhooked bra. One in each hand, I gently grasped Rong's breasts, lightly kneading her full bosom. My fingers gently rotated her nipples, while my mouth kissed her earlobes, neck, shoulders, and arms from behind. My engorged penis, throbbing with excitement, 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 fueled my desire.

My hand and mouth movements became increasingly intense.

The burning lust could no longer be contained. I suddenly pulled down Rong's clothes. Rong seemed to awaken from a dream, trying to resist me, but restrained by my embrace and her body's instincts. Her resistance grew weaker and weaker, and I removed her bodysuit. Her bra, squeezed under my weight, had already slipped off her chest, leaving Rong only in purple panties soaked with her juices.

Rong's figure was truly breathtaking; aside from her height, she was flawless, with an abdomen without an ounce of fat and a slender waist. Her full breasts had light brown nipples that were swollen and erect from the previous caresses.

I held Rong in my arms and gently placed her on the desk, kissing her lips again. Rong responded passionately.

Our tongues intertwined for a long time before my lips landed on Rong's left breast.

My hands also 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 a "plop plop" sound as I increased the speed of my fingers in and out.

Rong gripped my shoulders tightly, clenching her teeth to suppress any loud moans, her whole body trembling, letting out soft moans through her teeth: "Ah...ah...stop...don't...don't go so fast...no..."

After I pulled my fingers out, Rong, panting, revealed a sexy smile and slowly said, "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 same Rong who gave off a dignified feeling? Rong

's sexy smile: "What's wrong...junior...aren't you going to continue?"

I was stunned for a moment because I saw Rong's smile, which I had never seen before: "Huh?"

"Bad junior...I won't allow you to stop even if you want to..." Rong said these words that surprised me in that sexy and lewd voice.

I could only respond blankly: "Oh..."

Rong completely pulled off my underwear, which had been pulled down to my knees, jumped off the table, squatted down, took off my pants and underwear, gently pushed me to sit on the chair, and hid under the table. She gently grasped my penis with both hands, opened her mouth and took it in, and began to give me oral sex under the table.

A warm sensation enveloped my penis, not fully inside, but more than three-quarters of it was already inside, and my head began to move back and forth.

When less of it was inside, Rong would gently lick it with her tongue, only to withdraw it after a few licks, then move her head forward to take in more, repeating this process. The pleasure intensified the moment Rong licked it.

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 sex with her when

"Knock knock knock..." There was a knock on the door, and Rong and I were both startled and dared not move.

Fortunately, 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 voice, the door was pushed open... and in came my senior from the same research lab as Rong, Ling.

Compared to Rong's height of less than 150cm, Ling, at 162cm, appeared much taller. Ling was dressed quite casually today, in a pale yellow dress with thin straps, and looking down her shoulders, there was a transparent strap.

She was probably wearing a bra specifically designed for thin-strapped bras (I don't know the exact term, but it's the kind of bra many people wear when wearing thin straps).

Her 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, Ling recognized me.

Seeing me, she smiled and nodded, "Junior, graduated? Congratulations! By the way… have you seen Rong?"

Since I was still wearing my upper body clothing and sitting in a chair, it didn't seem too strange that I was simply sitting at Rong's desk reading.

I forced myself to remain calm: "No...no! Oh...she went out earlier."

Seeing my flushed face and nervous demeanor, Ling wondered what was wrong and asked with concern, "Are you alright, junior? Your face looks so red, do you have a fever? Or..." and walked towards me.

I panicked even more and quickly said, "No...I'm fine!"

Seeing that I was alright, Ling smiled and said, "Hmm...it's too hot..." before turning and leaving. Before leaving, she told me, "When Rong comes back, tell her we're leaving in half an hour! Tell her not to be late^^"

I casually asked, "Are you guys going out to play?"

Ling smiled and said, "Yeah~~and to say goodbye to the graduating seniors."

Then she left.

After Ling left and closed the door, I finally breathed a sigh of relief, and Rong also breathed a sigh of relief.

Emerging from under the table, it seemed that Ling's sudden intrusion had made us afraid to continue, and Rong's desire had cooled considerably.

Although her face was still flushed and her breathing was still rapid, the desire in her eyes had lessened considerably. However, looking at Rong's naked body, I couldn't resist any longer. 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...no...outside...outside...Ling's...Ling's outside..."

I didn't care about that. I thought Ling was already gone, and besides, it was graduation day, so there was unlikely to be anyone in the lab.

I smiled and said, "She's gone...don't think too much."

I kissed Rong's back, then gently spread Rong's white buttocks from behind with my left thumb and forefinger, while my right hand guided my hardened penis, gently pushing it forward. My penis slid past Rong's anus, reaching the crevice between her labia, and then slipped inside.

"Ah...ah...ah..." The moment I entered Rong's body, a warm, tight sensation enveloped my penis.

Although Rong's vaginal fluids hadn't completely dried, they were significantly less than before. Therefore, when I inserted my penis, the lubrication wasn't sufficient.

While it slid in smoothly, I felt a slight obstruction.

In this semi-wet state, the friction was even more intense.

The intense pain and pleasure caused Rong to cry out.

She gasped, but because it was a research room and there might be others outside, she didn't dare to cry out too loudly.

She only dared to hum softly.

"Ugh..." After my penis was inside Rong's vagina, the gasps she had been suppressing finally escaped her lips.

I held Rong's waist with both hands and began to slowly sway my hips back and forth. With each sway, my penis penetrated Rong's body.

"Ah...ah...ah..." Rong continued to gasp, her voice growing louder despite her attempts to suppress it.

Simple thrusting was no longer enough to satisfy my lust. I moved my hands from behind her back to her chest, kneading her breasts vigorously. This combined stimulation gave her even greater pleasure, and she couldn't withstand the double stimulation. "Ah... umm... ahhh~~" Her moans grew louder and louder. I then placed my hands back on her waist and gently pulled back, leaving only the head of my penis inside her vagina. Just as I was about to withdraw completely, I thrust forward forcefully, all the way to the end. "Ahhh~~" Suddenly, the gentle thrusting turned into a violent impact.

Forced to scream but unable to, she let out a few moans, then could only bite her lower lip, uttering broken, intermittent groans.

"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 her body with a "slap! slap! slap!" sound.

Rong's moans grew louder and louder involuntarily... After nearly a hundred forceful thrusts, I unconsciously let out low growls: "Rong... Rong... Rong..." repeatedly calling Rong's name. " Ughh

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