Skip to content After my eighteenth birthday, my older sister, Nathalia, wanted to help me experience the world as an adult. She thought it’d be fun to go on an adventure, so she decided to take me on a skiing trip to Aspen.
By the time we landed at Aspen/Pitkin County Airport, it was late in the evening. The airport was small but efficient, and after grabbing our luggage, Nathalia picked up the rental car.
Nathalia was three years older than me, her blonde hair cascading over her shoulders in loose waves. She had piercing blue eyes, high cheekbones, and smooth lips—the kind of looks she’d inherited from our mother. She wore leggings and a snug sweater that clung to her curves.
The drive to the cabin was quiet at first, but I couldn’t stop looking out the window. The mountains were nothing like I had ever seen before, towering peaks dusted in white, stretching endlessly beneath a dark sky. Moonlight reflected off the snow, making everything glow with an almost unreal brightness. Pines lined the winding roads, their heavy branches weighed down by fresh snowfall. Occasionally, we’d pass a warmly lit cabin, nestled deep in the trees, smoke curling from a chimney like something out of a postcard.
“You’re really taking it in, huh?” Nathalia glanced over, amusement in her voice.
“Yeah,” I admitted, still watching the scenery pass by. “I’ve never seen anything like this. It’s … peaceful.”
She smiled. “Told you it’d be worth the trip. Wait till you see it in the morning.”
The further we drove, the more secluded it became. The road curved through the trees, and the only sound was the hum of the tires against the pavement. Finally, we reached the cabin, tucked away from the main road. It was exactly like in the pictures: cozy, private and surrounded by nature.
We stepped out into the crisp air, our breaths visible in the cold. The porch light flickered on as Nathalia unlocked the door. Inside, the warmth hit instantly, the faint scent of wood and fire lingering in the air.
“Looks even better in person,” I said, dropping my bag near the entrance.
“Told you,” she murmured, stretching her arms. “Long trip, though. Let’s get some rest.”
I nodded. The exhaustion was settling in, but I couldn’t help feeling excited. Tomorrow, I’d wake up to a whole new world.
“But first,” she said with a grin, “I need to take a shower.”
“That’s fine,” I said and slumped down in the armchair.
“Do you wanna go first?” she asked, leaning against the doorframe. The light caught her blonde hair, making her look almost ethereal, like a goddess. “I can stay there for an hour.”
“It’s fine. I can wait,” I said.
“You sure?” she asked, her voice soft and caring.
I nodded. “I’m sitting so comfortably in this armchair anyway.”
She beamed. “Kiss.” Then, just like that, she whirled around and bounced into the bathroom.
I leaned back. This cabin wasn’t very soundproof. I could hear everything as she slipped off her clothes, one piece at a time. And that’s when my mind betrayed me. I thought of her undressing. I hadn’t done that before, but the way she sat so close to me on the plane made me see her differently.
My cock stirred. It left me puzzled. I shouldn’t be thinking of her like that. But I was. And a part of me, one I hated to admit, liked it. How could I not? She’d saved up her own money just to bring me out here to Aspen, to spend time together.
Everything I heard from my friends was how much their siblings hated each other and how they refused to get along. But I had a dream of an older sister, one who just happened to be the most attractive girl I’d ever known.
The sound of the shower pattering against tiles pulled me back. My gaze drifted toward the bathroom door.
At that moment, the only thing that could pull me out of this seat was the sight of her in that shower.
The thought alone made my heart pound.
I acted unconsciously. Or at least, that’s what I told myself.
I stood from the armchair and walked toward the door. Steam curled through the keyhole, the scent of her shampoo already teasing my senses.
I took a deep breath.
And I leaned in to peek.
Through the keyhole, I could make out Nathalia’s silhouette behind the steamy glass shower door. Her curves were tantalizing, water cascading down her body. I swallowed hard, mesmerized by the sight of her running her hands through her wet hair.
Slowly, my heart started pounding in my chest. I shouldn’t be doing this. She was my sister. But I couldn’t tear my eyes away. She moved around behind the steamed-up glass, her silhouette shifting like something out of an erotic trance.
“Gosh, you’re beautiful,” I murmured under my breath.
But I sighed. The steam was so thick that I couldn’t see her in her full glory. Then, forcing myself away, I went back to my armchair and waited.
Nathalia turned off the shower after just half an hour, which surprised me. She could easily stay in there for an hour.
“Tyler?” she called.
“I’m still here.”
“Can you come in and help me with something?”
My eyes widened, and my pulse quickened.
“Tyler?” she called again.
“Uh … yeah, I’m coming.”
I carefully pushed the door open, and there she stood, wrapped in a towel that was just big enough to barely cover her nipples and areolas, leaving large swathes of her perky breasts visible. The fabric reached her mid-thighs, beads of water glistening on her smooth skin.
“Were you scrolling through Insta babes or something?” she teased playfully.
I stuck my tongue out. “What do you need help with?”
She sighed. “I can’t reach the blow dryer. Also, I forgot to bring a bigger towel.”
I reached up to the shelf, doing my best not to let my eyes wander. “Here you go.”
“Thanks,” she said, taking it from me. “Also, can you check my bedroom for a bigger towel?”
I fetched one and brought it back. “Is this better?”
“Oh yeah, I could barely cover myself with this skimpy one.”
As I handed it to her, I noticed a peek at her areolas. Damn, she was sexy. My throat felt dry, and before I let my mind wander any further, I turned around and left.
It didn’t take her long to finish.
“All yours,” she said, stepping out of the bathroom, fresh and glowing.
“That must be your fastest shower ever,” I joked.
She stuck her tongue out at me this time. “I didn’t want to leave you hanging.”
As she wrapped herself properly in the larger towel, one I suddenly regretted giving her, she smirked.
“By the way, use the lemon shampoo. It’ll be great on you.”
I raised an eyebrow. “What’s the difference?”
She rolled her eyes. “It’ll make you smell sexy.”
“I’ll take your word for it.”
As I stepped into the steamy bathroom, Nathalia’s scent enveloped me—a mix of citrus and jasmine from her body wash. I inhaled deeply, letting it fill my senses. The mirror was still fogged, droplets clinging to every surface. I didn’t know why, but it was something undeniably erotic knowing she’d just been here nude.
I stripped off my clothes and stepped into the shower, the warm water cascading over me. As I reached for the shampoo, I noticed Nathalia’s razor perched on the shelf. My mind immediately conjured images of her privates, wondering where exactly she had used it. I shook my head, trying to banish the thoughts.
The lemon shampoo filled the air with its crisp scent as I worked it through my hair. I couldn’t help but think of Nathalia’s earlier comment about it making me smell “sexy.” My body responded, blood rushing south as I imagined her reaction.
I groaned softly, looking down at my growing erection. Part of me wanted to take care of it right then and there, release some of this building tension. But the thought of doing that while thinking about my sister felt wrong, even if my body disagreed.
I turned the water to cold, letting it shock my system. This was going to be a long trip if I couldn’t get myself under control. As the icy spray hit me, I resolved to keep things platonic, no matter how difficult it might be.
Eventually, I hopped out of the shower and dried myself. I wrapped the towel around me with my erection pressed against it. When I stepped outside, she rose from the couch. She was dressed in a purple nightgown without a bra on. I could even see her nipples poking against the garment, looking thin and sharp. The thin material clung to her curves, leaving little to the imagination.
“All clean?” she asked with a soft smile.
I nodded, very aware of how close we were standing. The scent of her jasmine lotion mingled with the lemon from my shampoo.
“Come here,” she said, opening her arms. “I want a goodnight hug.”
My heart raced as she pulled me close, her body pressing fully against mine. The thin towel and nightgown did little to mask the sensation of her soft skin. I could feel the firm points of her nipples grazing my chest as she squeezed me tight.
I silently prayed she wouldn’t notice my growing hardness pressed against her hip. But from the way she lingered in the embrace, her fingers trailing lightly down my back, I wondered if she could feel it too.
When she finally pulled away, her cheeks were slightly flushed.
“Do you know what it reminded me of when you grabbed the blow dryer for me?”
I shook my head. “Not really.”
“That you’re not little anymore, but taller than me,” she said, her voice a little softer.
“And?”
She rolled her eyes. “It’s just … something. I can’t explain now, but I’ll still call you ‘lil bro’ regardless.”
“That’s fine, sis.”
“Goodnight, little brother,” she murmured, pressing a quick kiss to my cheek before disappearing into her room.
I stood there for a moment, still reeling from the intimate contact. With a deep breath, I retreated to my own bedroom and closed the door.
As soon as I was alone, I dropped the towel. My erection sprang free, achingly hard. I fell back onto the bed, images of Nathalia’s body flashing through my mind: her curves in the tight leggings, glimpses of cleavage, the way her nipples had felt pressed against me.
I wrapped my hand around my shaft, stroking slowly at first. Part of me felt guilty for thinking of her this way, but I couldn’t help it. The teasing looks, casual touches and flirtatious comments from earlier played on repeat in my head.
My breathing grew heavier as I picked up the pace, imagining what it would feel like to touch her soft skin, to kiss down her neck. I pictured her in the shower, water cascading over her naked body.
I paused, straining to listen for any sounds from Nathalia’s room. All was quiet. The coast was clear. Reassured, I gave in fully to my desires. My hand moved faster, hips rocking as I chased my release.
But then, a shriek from her bedroom jolted me awake. My eyes snapped open. “Nathalia?”
I swung my feet off the bed, the sheets still covering my crotch. Before I could process what was happening, my door burst open, and she stood there, chest rising and falling like she’d just run a marathon.
“What happened?”
“Oh my god … I saw a spider,” she said, still breathless.
“A spider?” I said, rolling my eyes.
“Yeah, a frickin’ spider,” she shot back. “I’m not a tough guy like you.”
What an overreaction, but it wasn’t the first time.
“Can I please sleep here tonight?” she asked in that pleading tone, and the one that always made me cave.
I knew I couldn’t deny her, but at the moment, I had a massive erection, and I was just about to come on top of it. Now I was doomed. No chance to finish.
“Sure,” I said, forcing my voice to sound normal.
“Thank you,” she sighed in relief before hurrying off to grab her pillow and bag.
I swallowed hard, shifting awkwardly under the sheets, doing my best to adjust so she wouldn’t see just how hard I was.
Nathalia climbed into bed next to me, the mattress dipping under her weight. I shifted to make room, hyper-aware of her proximity. The thin nightgown did nothing to conceal her curves as she settled in, her leg brushing against mine.
“Thanks for letting me stay,” she murmured, her voice soft in the darkness. “I know it’s silly, but that spider really freaked me out.”
“It’s fine,” I replied. “But let’s try to get some sleep.”
“Sure,” she said as we both drifted off to sleep.
When I fell asleep, I drifted into an intense dream, one involving me and my sister.
We were in the shower together, water cascading down our bodies as I lathered soap over her smooth skin. Frustration built as the steam veiled her in an erotic haze, teasing me by hiding the curves I so badly wanted to see. I tried waving the mist away, but she just laughed, playfully shaking her ass before pressing it against my crotch. A groan escaped me, and I shivered in pleasure as she stuck my cock into the crack of her ass.
Then, she turned around, her eyes full of mischief as she wrapped her fingers around my length, picking up right where I’d left off earlier. It was a wet dream—an incredibly tense one—but she didn’t finish me.
Somewhere in the background, a muffled buzzing sound echoed, its source unclear. At first, I ignored it, clinging to the dream, but the noise grew louder, pulling me from that sweet fantasy.
Unlike my usual wet dreams, I didn’t climax before waking up, but I was rock hard either way.
Then I stiffened for an entirely different reason.
The buzzing hadn’t stopped.
I turned my head to the left, my breath catching as I saw my older sister breathing deeply while lying on her back. Her eyes were closed, but her face was flushed. The covers had slipped down, revealing her nightgown hiked up around her waist. Between her spread legs, I could just make out the outline of something moving in circles.
My breath caught in my throat as I realized what I was witnessing. Nathalia was pleasuring herself with a vibrator, right there next to me in bed. I lay perfectly still, not daring to move a muscle. Part of me knew I should look away, but I couldn’t tear my eyes from the mesmerizing sight.
Her chest rose and fell as her breathing quickened. One hand gripped the sheets while the other moved the toy in small circles. She moaned and enjoyed herself as her back began to arch slightly off the bed.
Suddenly her body went rigid, thighs clamping together as she climaxed. A long, shuddering gasp escaped her as waves of pleasure washed over her. I held my breath, willing my own body not to react as I witnessed my sister’s intimate moment.
After a minute, Nathalia’s eyes fluttered open. I quickly shut mine, feigning sleep. Through barely-open lids, I watched as she stretched, then reached down to retrieve the vibrator. To my shock, she brought it to her mouth, her pink tongue darting out to lick it. Then she wrapped her lips around it, sucking it clean and coming off with a soft pop.
Once satisfied, she leaned over the side of the bed, fumbling in her bag before tucking the toy away. Then she settled back onto the pillow with a contented sigh.
I lay there, my erection throbbing almost painfully. Part of me longed to reach out and touch her, to finish what she had started. But I knew I couldn’t. This was my sister. No matter how turned on I was, crossing that line was unthinkable.
Eventually, despite my discomfort, exhaustion won out and I drifted off to sleep once more.
This is a snippet from Sister’s Birthday Gift Series, a full-length romantic incest novel told in three parts and an epilogue.
While in Aspen, they fall in love, with each other and with traveling. The series also includes a trip to Las Vegas, where the sister brings along her best friends, who are twins, and a later journey to the Bahamas with their mother.
If you’d like to support my work, you can find the eBooks here: Sister’s Birthday Gift Series.
Or if you want to read similar stories, click here: brother sister incest stories