Big sister with a great figure

I think it was during my third year of junior high school summer vacation. One day, by chance, I noticed the bathroom window where my older sister was showering wasn't closed. Being in my adolescence, I secretly climbed onto a chair and leaned against the window to peek at her. Good heavens, was I seeing things? My sister's breasts were enormous! I was shocked. Even now, thinking about it makes my hands tremble…
The next morning, while my sister was at work, I sneaked into her room and opened her underwear closet. As soon as I opened it, a fragrance wafted out—the kind of fragrance unique to women. (By the way, my sister looks a bit like a modern-day Binqibu.) There were probably more than twenty bras in there, and countless panties. I picked up one of the bras, probably a half-cup, with transparent straps. I looked at the tag—oh my god, 80F! Really? My sister has such a great figure! How come I never noticed? I picked up the bra, smelled it, and stuck out my tongue… I licked the side of her bra that touched my older sister's nipples, imagining myself licking her breasts, but ultimately couldn't resist my conscience. I put the bra back and went back to my room…
That night, I secretly opened the bathroom window a crack because someone had showered earlier and the windows were completely closed. I hoped my older sister wouldn't notice. A little later, when my sister said she was going upstairs to shower, I followed her, saying I had homework to do. After she went into the bathroom, I tiptoed onto a chair and leaned against the window to peek at her showering. She was washing her face, but she had taken off her bra and was only wearing her underwear. Her F-cup breasts looked even bigger because she was bending over to wash her face, and because her movements were a little rough, her huge breasts swayed back and forth. Of course, I couldn't resist. I found my penis was already erect…
Another night, my older sister turned the stereo up really loud and went into the bathroom to shower. It seemed my older sister had gotten used to leaving the window a crack. I didn't secretly open a crack, but she opened one herself for ventilation. Seeing an opportunity, I leaned against the window and peeked at her taking a bath. She was already naked, but she was sitting on the edge of the tub, not showing any sign of wanting to bathe. I noticed her eyes were closed, her left hand on her right breast, touching it. Curious, I stood on tiptoe and saw her right hand on her vulva, her mouth slightly open. Could it be? My sister was masturbating! No wonder the music was so loud. Gradually, her mouth opened wider and wider, her breathing became faster and faster, her left hand kept kneading her breasts and nipples, and her right hand's movements became faster and faster. Clearly, her right hand was making thrusting motions. Her moans grew louder and louder with the increased speed of her movements. Suddenly, my sister let out a soft "Ah…", and all her movements stopped. She probably had an orgasm. Her eyes remained closed, her mouth… I closed my eyes slightly, my penis already throbbing against the cold wall. Suddenly, my sister opened her eyes and looked out the window. I was startled and quickly went downstairs pretending nothing was wrong, hoping she hadn't seen me…
The next morning, I got up especially early. As soon as my sister left for work, I took off all my clothes, went into her room, opened her underwear closet, and took out a light blue 2/3 cup bra and put it on. I also took a pair of snow-white low-waisted silk panties and put them on. By this time, my penis was already erect, so it was a bit difficult to put them on. After a while, I finally got them on and went to a full-length mirror. The panty part bulged out, which was, of course, my penis. I tried on many bras, almost all of them: red 2/3 cups, apple green 2/3 cups, white 2/3 cups, and even a black strapless bra. There was even a black one-piece Reissgar silk panty that almost made me ejaculate on the spot. Ah, sexy lingerie!
So I put it on, exposing my penis, and grabbed a light orange low-rise panty. I noticed that the fabric around the vagina was designed to be sewn on only one side, with a small hole on the other. It took me a lot of effort to slip my erect penis inside. After that, I picked up a black full-length bra with shoulder straps and licked it, imagining myself holding my older sister's F-cup breasts, licking the pink nipples, and inserting it into her wet vagina. I did this for a long time, and when I was about to lose control, I thought I'd just ejaculate on her panties. So I pulled out and aimed at the side that had been in contact with her vagina, ejaculating violently. Thick semen remained on my older sister's panties, some even dripping onto the floor. I grabbed some tissues, wiped my penis clean, and also absorbed some of the semen from her panties to prevent them from getting too wet. The next time my older sister wore this, it would feel like I was inside her vagina…
even now. I'm 21 years old now. It's been over six years since I started peeping at my older sister while she showered and masturbating with her bra. Just the Sunday before last, my parents went to California for a week, and my second sister went on a nine-day business trip to Taitung, leaving only my older sister and me at home. One evening around 7 pm, my older sister came home from get off work. Their uniform skirts were incredibly short; as soon as she sat down, the skirt rode up to almost reveal her underwear. Her top was a front-button style, and when she wore it, her 80F breasts immediately looked like two mountains, the buttons almost bursting open. Perhaps because she was tired from get off work, she sat on the sofa, her legs relaxed, and I saw her white underwear covered by stockings. Perhaps because she was too tired, she didn't notice my gaze had shifted from the TV to between her legs. In that instant, I couldn't resist anymore, so I slowly walked towards my older sister and suddenly reached out to grab her 80F breasts. My older sister jumped in surprise and immediately stood up, yelling, "What are you doing?!" I ignored her, pinned her to the sofa, and forcefully ripped off her uniform, buttons flying everywhere. I then ripped off her bra, revealing her 80F breasts, their pink nipples hardening. My sister struggled desperately, but I held her down with my left hand while my right hand, of course, was squeezing her incredibly voluptuous 80F breasts. Next, I rolled up her skirt, tore off her stockings and panties, and discovered her vulva was already wet, probably just normal discharge. So I picked up my already rock-hard penis and aimed it at her vaginal opening. My sister kept screaming, "No! No!"
Of course, I ignored her. After aiming, I thrust hard, and with a "Ah…," my sister let out a moan as I entered her wet vagina, the place I had been dreaming of. Perhaps she had resigned herself to her fate, or something else, because she stopped resisting and instead clung to me, even moaning in rhythm with my thrusts. Ah… about ten minutes later, I was about to give up. When I tried to pull out, my older sister's vagina suddenly contracted violently, making it impossible for me to pull out. I felt a warm rush towards my penis, so I decided to insert it all the way in. I thrust hard, and my penis went all the way in, hitting something—probably her uterus. With that thrust, all my semen shot into my older sister's uterus. With a contraction, my penis finally came out. My older sister was lying on the sofa, and I apologized to her with a guilty conscience, but she just stared blankly at the ceiling without answering…
For the next few days, nothing else happened between us. The awkward situation between us eased a little after my parents came back. I would take advantage of everyone watching TV dramas to go upstairs and ask my sister to give me oral sex and to give me breast sex with her 80F breasts. She did it. Sometimes, I even penetrated my older sister's vagina in the bathroom, but I always ejaculated into her mouth and made her swallow my semen…

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Big sister with a great figure

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