Siblings Secret Summer

Disclaimer: Everyone in this story is 18 years or older. Any similarities to real persons, places, or events are purely coincidental unless explicitly stated otherwise.

Siblings' Secret Summer.

Chapter 1

It was my first night alone with my sister; our parents traveled to Florida for a family reunion. Luckily for us, we didn't need to go. I took a glance at my phone. Damn, 2:15 am, I thought while shutting down my PC. It was time for me to go to bed. Most days, I played games until deep in the night. My friends always went to bed earlier than me, so I played alone. Before I could sleep, I always took care of myself. Most nineteen-year-olds masturbated; well, most of them didn't need to do it as often as I did. Let's just say it was my way of releasing stress. Many times, I wished I had a girlfriend so I could lose my virginity to her, but as you guessed, I never got one.

Before Mom and Dad left, they surprised my sister and me with an inflatable pool. My sister was especially excited. She was already on her phone, messaging her friends. I could see her eyes sparkle with excitement. Her friends already came over regularly, but with our new pool, I expected them to come over more often. I didn't have a problem with this since usually I was in my room, and besides, she had beautiful friends.

Even though I'm a shut-in, my sister and I were pretty close. She would always ask me to go shopping with her, as she loved showing off how she looked in her new dresses and skirts. Now that we had a pool, she again asked me to go shopping with her, as she needed a new bathing suit. I hesitantly agreed to go with her, even though shopping wasn't my favorite hobby and I felt like it was a waste of money. But I couldn't resist the chance to see my sister's gorgeous body. Immediately after I agreed, she grabbed my arm and dragged me towards the door. I struggled against her, telling her that I still hadn't had breakfast. In response, she smiled at me, "We can eat at the mall. Let's go already!" She said while she pushed me out the door and into the car.

My sister had just passed her driver's test and gotten her driver's license. I was still scared for my life every time I was a passenger of hers. She drove like a Formula One driver, braking late and flying past cars. When we finally arrived at the mall, I needed to take a quick breather.

"Lily, you always scare me when you drive. Couldn't you at least not give your brother a heart attack?" I said while leaning against the car.

She smiled at me. "Don't be such a wuss; driving fast is fun, and besides, you can't comment on me since you don't have a driver's license yet."

"Fine, whatever. Let's just go shopping. The faster you get your bathing suit, the faster I can go home," I responded.

Lily grabbed me by my arm as if we were a couple. I wished I had a girlfriend like my sister, but I knew they would be way out of my league. We walked into the shopping mall; my sister's eyes lit up. I knew exactly what was going on. Whenever we went shopping, her mind was solely focused on one thing: clothes, clothes, and more clothes. She quickened her pace as she headed towards a lingerie store.

"I can't go in there!" I desperately said.

"You told me you would go shopping with me," she responded angrily.

"You told me we were going to shop for a bathing suit, not lingerie." I quickly walked towards a bench near the shop. "I will wait here".

She looked at me with fire in her eyes. "You dummy, they sell bathing suits in here. Come on, let's go."

She grabbed my hand and dragged me into the store. The staff looked at us as we walked in. I could feel my face turning red. I wasn't supposed to be in there. I thought. This is for women, not for men. Lily dragged me from aisle to aisle. I looked around the store and saw various pieces of erotic clothing. "These aren't bathing suits," I remarked.

"I know, I know... I mean, while I'm here, I might as well try some on, right?" she said with a mischievous smile on her face. She grabbed some different sets and told me to hold them for her. She had taken a pink lingerie set and a purple bodysuit. As I felt the soft fabric on my skin, blood started rushing to my cock. Lily pointed me towards the bathing suit section.

"Do you think this one looks nice?" she asked, holding up a light blue bikini.

"A thong?" I said.

"What? Don't you think it will look good on me?" She asked with a sad tone.

"Well, you would probably look good in it. I just don't think Mom and Dad would like you wearing that." My mind wandered about how my sister would look in that bikini, making my erection grow more. I saw Lily stare at my waist. She stared a little too long, and as I gave a little cough, she started to speak again.

"Uhh... Oh, sorry... I mean, Mom and Dad aren't here right now, so it should be fine." Her cheeks started to blush.

She browsed some more and grabbed a black one-piece bathing suit. "Alright, let me try these on. Tell me how they look."

She grabbed the lingerie from me, and we went over to the changing rooms. As I sat down on a chair, I started to browse my phone. It took some time before she was ready and shouted at me to come over. The curtain opened, and there she was in the light blue bikini. She looked at me with her blue eyes and asked me how it looked on her. Lost in thought, I didn't respond immediately. My sister looked beautiful in that bikini; her blond hair matched the light blue color, her full breasts were nicely covered, and the thong made her long legs look even longer. She turned around for me, showing how the thong went up her crack, making her round ass stand out. My head was losing all blood as it ran towards my throbbing cock.

"How does it look, big bro?" she asked, playfully twirling her hair.

"I think it looks beautiful," I remarked. "I bet every guy would want you if they saw you like this."

Her face turned even redder, perhaps from embarrassment. "I'm sorry, Lily. I didn't mean it like that. I'm your brother, and I shouldn't talk that way to you," I tried to comfort her.

She turned around and quickly closed the curtains. Softly, I heard her mutter, "You big dummy." I was unsure what she meant but tried to focus my mind on something else.

Not long after, she opened the curtains again. This time, she wore a black one-piece swimsuit, the black color accentuating her fair skin. The swimsuit might have been a little small, but it made her hourglass figure stand out even more.

"I like this one," I commented. "It makes your figure stand out." She grabbed the curtain, hiding herself slightly.

"Does this make me more mature?" She softly asked.

"I think so. It shapes your body well," I replied. "Does it fit you correctly? It looks a bit on the smaller side." At that moment, I noticed her erect nipples piercing through the fabric, and my penis grew larger once again. I was fairly certain Lily noticed, as she quickly closed the curtain again. This time, I tried to ignore it all. It took a while before Lily came out of the changing room again.

"Weren't you going to try on the lingerie?" I asked her.

I saw her quickly turn her face away from me. "I can't show you that, at least not yet." She said quietly. I tried to ignore her comment. Lily enjoys playing these games with me, teasing me. I don't understand why she does it; she's been doing it since we were teenagers. We went to pay for the items. She looked me in the eyes. I knew what it meant; she didn't have any money, and I needed to pay for her. I grabbed my wallet and paid for everything. She grabbed my arm again and leaned her head on my shoulder. I felt her breath against my arm as she spoke once more.

"Thank you, big brother."

"No problem," I replied.

"Alright, it's your turn," she replied. "Let's check out this store."

We walked into the store, and I began browsing. I found a pair of dark blue swim shorts and decided to try them on. I wasn't as picky as my sister and believed these would be just fine. As I showed them to my sister, she remarked that she didn't expect me to look so fit. I laughed as I closed the curtain. As I removed the shorts, her head poked in. You also need to try these on. She held a pair of Speedos in her hand. Once again, she had that mischievous look on her face.

"There's no way I'm trying these on!" I said, a bit too loudly.

"Just do it!" she insisted. "I bet they'll look good on you."

She gave me her infamous puppy eyes; no one could resist those. I snatched the Speedos from her hand and pushed her head out of the changing room. To my surprise, they fit perfectly. As I opened the curtain again, I caught a glimpse of a flash. My sister smiled at me.

"It looks good, big bro," she grinned from ear to ear.

"Did you just take a picture?" I asked angrily.

"No, I think you're just seeing things," she replied while hiding her phone.

I sighed and decided this was enough for today. I went back into the changing room to put my clothes back on. Once I was done, I stepped out of the changing room. Lily was there waiting for me.

"I'm sorry. I didn't mean to make you angry," she said while looking at the ground.

"Whatever. Let me just pay for this," I said, holding up the pair of dark blue shorts.

"Please, just buy the Speedos too. I swear they look great on you. Please? I think Chrissy will like them." Chrissy was her extremely attractive friend. She was a bit smaller than Lily, but her features were much larger.

"Alright, let me pay for it, and let's go home," I responded.

"Don't you want to grab something to eat? You didn't even have breakfast," she pointed out.

"I'll eat something at home. My social battery has run out," I stated. I paid for the swimsuits, and we made our way back to the car. As we arrived home, I grabbed a quick snack before returning to my room.

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Chapter 2

It was late in the evening; I was done playing video games. It was still warm outside, and I felt like cooling off. We now have a swimming pool, one of the best ways to cool off, I thought.

I quickly changed into my swimming shorts and started to walk downstairs. On my way down, I happened to pass by a slightly opened bathroom door. To my surprise, Lily was showering. As I peeked through the door, I saw her wash her body. The foggy glass made it difficult to see her entire body, but I could make out her breasts and pink nipples. This sight excited me, and I couldn't resist touching myself through my shorts. It was a rare opportunity to see my sister in such a vulnerable state. It had been one of my dreams to see my sister shower, and today, it had become a reality.

My body wanted to feel more pleasure, so I moved my hand down my shorts and grabbed my penis. Slowly, I started to stroke it. Just seeing my sister's hands glide over her hips and then towards her breasts made me feel like orgasming. I started to stroke faster and faster. Until I could not take it anymore, I finally released. Spurts of cum ejected out of me. I had been smart enough to hold my hand out, catching the load before it splashed against the door. I quickly stood up to go wash my hands.

After washing my hands, I grabbed a drink and headed out to the backyard where the pool was located. The water was calm, and the scent of the night filled the air. I entered the pool, submerging my body with only my head above the water. I gazed up at the beautiful sky, disappointed that the city lights obstructed my view of the stars. I wondered how magnificent the sky must have looked centuries ago. Suddenly, my sister interrupted my philosophical moment.

"Mind if I join you?" she asked.

I nodded and replied, "Of course, I'd be happy to have some company."

Lily entered the pool wearing her new light blue bikini. She sat down beside me, and my previous arousal resurfaced as her soft thigh pressed against my leg. She rested her head on my shoulder, sending shivers down my spine.

She looked up at the sky. "Isn't it pretty?" she remarked.

I agreed with her. "Yes, it is," I replied to her.

Lily moved away from me and began swimming on her back. Her chest rose out of the water with each stroke. The pool wasn't very long, and soon, she accidentally hit her head against the edge. She giggled and splashed some water at me. I looked at her, illuminated by the moonlight, her face and body glistening. I playfully splashed water back at her, and we both laughed.

"Do you want to fight?" she asked playfully.

"You think you can win?" I responded.

Before I could finish my sentence, she flung water in my face.

"Alright, it's war!" I declared.

We played like children, laughing uncontrollably. Lily thought she had a clever plan and ran towards me, attempting to tackle me. I fell backward, and she landed on top of me, her body pressed against mine.

"Do you want to turn this into a wrestling match?" I commented while getting myself ready.

Before Lily could respond, I dragged her underwater. We wrestled for a while, our bodies colliding. Her skin felt incredibly soft as I explored her. My penis had become rock solid, and Lily noticed. She pressed her body closer to mine, intensifying the sensation.

"Do you surrender?" I asked her.

She let out a little giggle as I pushed her away to the other side. She came back as fast as I had pushed her away. She wrestled with me again, my hand landing on her butt again.

As I pressed my hand against her butt, this time I made sure my whole finger was against her pussy. She still wore her thong, but I could feel the outline of her labia. She squirmed against me as I tried to push her away.

With a mischievous look in her eyes, she continued the fight without responding. I noticed her thighs moving between my legs; I wasn't exactly sure what she was trying to do. But every so often, she pressed her thighs against my shaft, arousing me further. My penis became fully erect from the pressure of her soft thighs. I knew she was doing it intentionally, her body grinding against mine as my penis throbbed against her. We continued this motion until I could no longer resist. I pulled her away and pushed my hand against her buttocks, my pinky finger lightly brushing against her pussy. She giggled as I pushed her to the other side of the pool. But she returned just as quickly as I had pushed her away. We continued wrestling, but it was clear to anyone watching that our actions went beyond playfulness. I slid my hand further up her buttocks, feeling every contour, and making sure she felt my finger against her pussy. Her nails dug into my skin as she resisted, yet I could see the pleasure in her eyes.

We continued for a while, but Lily had different plans. She pushed me down and wrapped her arms around my neck. Her legs moved around me, and she lowered her body onto mine. I felt her buttocks rest against me as her pussy pressed against my throbbing erection. I longed to feel her smooth labia against my shaft, but the barrier of our bathing suits prevented it. My penis grew even harder, and Lily noticed. She began moving up and down, grinding her pussy against my penis. She rode me like a toy, moaning softly as the pleasure intensified. I was on the verge of climaxing, and at that moment, Lily's pussy started to contract against me. I felt the warmth of her orgasm as her fluids sprayed over me, accompanied by another moan of pleasure. As she regained her senses, she quickly left the pool, claiming she had something to do. I knew she was lying, but I said nothing. She walked away, her hips swaying with each step. My penis remained erect, leaving me frustrated and unsatisfied.

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Chapter 3

Birds chirped as I felt the sun on me. I looked at my clock; it was already 10:30 am. As I walked towards the bathroom, I heard two female voices downstairs. My sister had brought over a friend, and I couldn't determine exactly who it was. After I had finished in the bathroom, I went downstairs. I peeked around the corner and saw my sister and her friend, Chrissy. It was a hot day, and both girls wore skimpy outfits. Chrissy wore a white skirt with a black crop top, while Lily wore a jeans skirt with a white sleeveless top. Both girls were barefoot. My excitement rose when I saw their soft, tanned legs. Chrissy was slightly shorter than my sister, but her legs appeared longer. I tried to compose myself as I entered the room.

Good morning, sis!" I said while I glanced at Chrissy.

"Good morning," she responded.

As I looked at Chrissy, I saw her cheeks were flushed red.

"Hey, Chrissy, I haven't seen you in a long time. How are you doing?" I asked.

She glanced over my body as she replied, "I'm doing well. How have you been?"

"I have been doing fantastic!" I commented.

As I walked past them to grab some breakfast, I caught a whiff of Chrissy's sweet vanilla scent, making my heart beat faster.

"We are going out to the beach. Do you want to come with us?" Lily asked me.

"Sure, if Chrissy is alright with that," I responded.

Lily looked at Chrissy and gave a little nod. "I'm fine with that," Chrissy replied.

"Alright, let me get my swimsuit," I said while walking upstairs.

When I returned to the girls, they were already waiting. We made our way to the car, with Lily taking the wheel towards the beach. During the ride, the AC gave up, and the increasing heat made us all sweat. I felt sweat trickling down my neck, and I noticed Chrissy was feeling the heat, too.

Upon reaching the beach, I dashed towards the sea. The sand was hot, and Lily shouted at me. "Wait!! You need to put on some sunscreen; we don't want you to get sunburned."

Hurrying back to Lily and Chrissy, I found them under a beach umbrella. I settled beside Chrissy and began searching for the sunscreen. When I finally found it, Chrissy turned to me, "Can you help me apply some sunscreen?"

Initially, I hesitated but agreed to do it. She laid down on her chest as I grabbed the sunscreen and applied some to her back. As I moved my hand, I could feel the soft and warm skin of her lower back. Slowly, I moved my hands up towards her upper back, enjoying this moment.

Chrissy asked me to unbuckle her bikini. I was taken aback for a moment, but Chrissy noticed my reaction and decided to give me a little wink. My penis grew significantly as I began to unbuckle her. The straps fell to her sides, and I finally saw and felt her smooth back.

As I finished with her back, I moved on to her arms. My hands moved over her upper and lower arms and then down to her legs and onto her feet. My hands grabbed her soft and small feet as I spread the sunscreen between her toes.

I moved onto her calves and towards her thighs. Slowly, my hands went higher and higher until I was almost at her crotch. I could feel the warmth between her legs as I saw a tiny wet spot appear on her bikini bottoms. I moved my hands up and up until my finger slightly touched her covered pussy. Chrissy let out a moan and pushed her pussy against my finger.

My animal instincts almost took over as I wanted to fuck her so badly. Chrissy wiggled her hips, which made me snap out of a trance. Slightly taken aback, I asked her to turn around. She hadn't buckled her bikini top, and as she turned around, I saw a glimpse of her pink nipples.

I moved onto her stomach, smearing out the sunscreen as I moved up to her breasts. She opened her eyes and whispered, "Don't forget to do them." She winked, and her hand guided me under her bikini top. My fingers slid past her bikini, and I could feel her soft breasts. My fingers moved up again, and I started to feel her erect nipples. I played with them for a bit as I rubbed the sunscreen out.

I saw Chrissy grin, and within a moment, she sat up and pushed me down. "I think you're done with me. Now it's my turn to enjoy you," she said, spurting some sunscreen onto her hand and then moving onto my chest. I felt the cold sunscreen on my chest and then her warm, soft hands. If she hadn't noticed before, now she would have noticed that I had a tent inside my swimsuit. She let out a little giggle at the sight as she moved her hands around my chest and arms.