Sister's Plan Unravels
Copyright© 2025 by MrCurrie
Chapter 1
Incest Sex Story: Chapter 1 - Jealous of her mother’s affection for her brother, Mia hatches a plan to sabotage his studies—determined to knock him off his pedestal. Narrated from Mia's POV.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Consensual Heterosexual Fiction Incest Mother Son Brother Sister Pregnancy
The blaring alarm shattered the remnants of my restless sleep. Mondays always hit me hard, paying the price for staying out late on Sunday nights with my girlfriends. I groaned, rolled out of bed, and shuffled to the bathroom to freshen up. Although the clock read eight and I didn’t have to be at work until ten, I adhered to my ritual of assisting Mom prepare breakfast.
The pleasant aroma of cooking greeted me as I entered the kitchen. Mom stood by the stove, her radiant appearance defying her thirty-eight years. She glanced at me with a knowing smirk, and teased, “Good morning, Mia. Rough night?” Her cheerful tone hinted at her knowledge of my previous evening’s activities.
“Morning, Mom. I may be getting too old for late-night parties,” I groaned, grabbing the dishes and silverware to set the table, as I had every morning.
“Really?” Mom asked, her lips curving into a playful smile. “My twenty-year-old can’t handle staying out late anymore? Wow, you’ve aged quickly since you started working.”
Mom’s lighthearted banter always had a way of lifting my spirits, and that morning was no different. Smiling, I shot back, “It’s worth it, Mom. Besides, I’ll feel a lot better after breakfast. You know, maybe it’s time you went out and had some fun. Steve might still be a brat, but he’s old enough to survive without a babysitter for a night.”
Mom’s face lit up, though expressing a hint of vulnerability as if I had struck a nerve. In a soft tone, she replied, “You know, I’ve been thinking about it. With you settled into your new job and Steven buried in his studies all the time, I’ve thought about putting myself out there. My thoughts about it have been popping up more frequently, now that I’ve switched to half-time. You don’t think I’m silly to think anyone would be interested in me?”
Mom was well aware of her attractive appearance, but I felt the need to provide her with a confidence boost. With a mischievous grin, I chimed, “Mom, you’re a smoking hottie. Seriously, if you want, I could set you up with any man you want. Just say the word and I’ll hook you up with a hunk.”
Her smile widened, as she replied, “Hopefully, not with the professor you had an affair with, you know, the one that got you kicked out of college.”
Mom and I had formed an unbreakable bond ever since Dad had left us a decade earlier and no topic was off-limits between us. She was more than a mother—she was my best friend. I laughed, shaking my head, and argued, “That was totally unfair and you know it. Just because he was tenured, he came out of it without a scratch while I got the boot. Talk about a double standard. Getting good grades from him wasn’t worth it anyway—he was a terrible lay. Besides, I never cared for college and I love my present job.”
Hearing the sound of my brother’s shower, Mom shifted the subject, “Have you thought about Steven’s nineteenth birthday? It’s coming up next week.”
“I thought we were over the whole birthday gift thing,” I countered with a shrug. “Pretty sure I didn’t get anything from him for my twentieth.” When Mom turned to the stove to finish cooking the eggs, I added, “He’s always cooped up in his room studying. I know exactly what he needs. I’ll convince one of my friends into giving him a one-night stand. Getting him laid would brighten his day.”
She spun around abruptly, her expression shifting to one of stern concern. “You’ll do no such thing, young lady,” she scolded. “Steven doesn’t have any extra time for that kind of distraction. I don’t want him dropping out of college and throwing his life away.”
Her words trailed off, her face clouding with painful regret as she realized the unintentional jab at my own actions.
“Like I did,” I replied, my voice sharper than I intended. The flash of hurt in her eyes tugged at my heart. Trying to ease the blow, I quickly added, “Mom, I told you I’d pay you back for my college expenses. I haven’t forgotten.”
Mom’s expression softened as she assured me, gently speaking, “There’s no need for that. As I’ve said before, your choice was the right one for you and I’m sorry if I made it sound like I didn’t approve. Besides, with only Steven in college, the expenses are much more manageable now. I’d rather you save your money and focus on securing your future.”
Mom turned to the stove again and scooped up the scrambled eggs, hearing my brother’s door close shut. When I watched her firm ass cheeks subtly wiggle through her thread-bare, old robe as she worked, I teased, “Mom, your thirty-ninth birthday is coming up too. Maybe I’ll give you two the same gift—get both of you laid.”
Her buns tensed and I wondered if she was thinking about the last time she enjoyed the throes of sex. She turned, her face beet-red, and uttered, “You’re so bad.”
Before she could say anything more, Steve walked in and plopped into his chair. Mom and I froze, our faces flushed from our heated conversation.
“What’s going on?” Steve asked, his eyes darting between us. “You were talking about me, weren’t you? What is it this time?”
Mom placed the plate of eggs on the table before settling in. “Not about you, dear,” Mom replied, smiling calmly. “Just girl talk, nothing concerning you.”
As usual, his focus shifted to devouring his breakfast with the enthusiasm of a starving man. Meanwhile, Mom and I ate at a more leisurely pace, along with smaller portions, ever aware of our weight. My thoughts returned to when I jested with her about intimately joining with a man, while I watched her closer than usual. “Was it my imagination or was her face filled with more happiness, now that my brother, her son, had joined us?” I asked myself. When their glances connected, her smile broadened and her eyes twinkled. I discreetly observed my brother’s actions and didn’t notice anything different.
His rugged, handsome face would be a magnet for any woman, so it wasn’t surprising that she’d smile when looking at him. While his brown hair matched Mom’s, his deep blue eyes mirrored my own.
Mom’s large brown eyes radiated a warmth that would melt anyone’s heart. While we shared similar bob-cut hairstyles, Mom preferred a longer length, giving her an elegant touch. Strands of hair occasionally swept across her high cheekbones and framed her alluring smile, enhancing her natural charm. I couldn’t help but feel a pang of jealousy at times, envious of her effortlessly captivating beauty.
When Dad left us, we were forced to mature quickly, me becoming Mom’s confidant while Steve transformed into a man, taking over the chores and duties a grown man would normally do. He studied hard at school and worked at any additional jobs he could to bring in money to support the family. His muscled body had filled out and I wondered how he had remained unattached while attending college, filled with so many horny, young girls.
“At what point had my nerdy little brother turned into such a hunky young man?” I pondered while admiring him in an entirely new light. Mom and he were engrossed in a discussion about his school when I noticed a subtle change in his expression. His eyes brightened, and a wide, genuine smile spread across his face, crinkling the corners of his eyes.
Looking over to Mom, I saw the same adoring look, along with her pulling her shoulder-length hair behind her ear on one side. I recognized the move as I had done the same when I’d make a pass at a man.
“Mom was flirting with my brother!” I screamed to myself. After watching them interact for a few minutes, I realized I had overreacted. It was just Mom being herself, showing her love for her children.
Soon after, Steve left for school and I helped Mom clean the kitchen before we headed off for work. While I went through the toils of my job, my mind kept circling back to my conversation with Mom and my revelation that my brother had suddenly become a man. “What did Mom actually think about my life choice and did she admire my brother more because of his dedication to his studies?” I asked myself, my questions gnawing at me the whole day.
On Wednesday morning, Steve shuffled in for breakfast unusually late, his disheveled hair and tired eyes betraying a rough night.
“What’s the matter, dear? You look like you didn’t sleep well,” Mom asked, her voice tinged with concern.
“I didn’t,” he wearily answered, slumping into his chair. “Today’s exams are tougher than normal and after cramming for them until late, I tossed and turned most of the night.”
“You’ll do fine,” Mom replied, in her usual warm and encouraging tone. “Eat up and once you’ve had breakfast, you’ll feel better.”
Mom was right as always. By the time Steve finished his hearty meal, his energy had returned, and his expression had brightened. Mom had an uncanny ability to care for us, steadying us through life’s challenges.
Glancing at the clock, Mom turned to me and asked, “It’s too late for Steven to make the bus and arrive at school on time. Would you mind dropping him off? “ “Sure, I’ll go change and get ready. It’s not too far out of the way,” I volunteered.
On the drive over, he coyly glimpsed at my exposed legs several times. I preferred short skirts and it had risen several inches higher, revealing the lower portion of my smooth, bare thighs. Men had always complimented me on my legs and it made me feel good that he was also attracted to them. Even though he was my brother, he was also a man who appreciated a woman’s assets.
When I stopped to let him out, he turned to me, his face a little flushed, suspecting I caught him checking me out. “Thanks, Sis,” he said and hopped out.
Mirroring his actions, my eyes locked onto his firm ass as he marched down the sidewalk to a large building. Along the way, several cute girls waved and called out to him, obviously flirting while vainly trying to catch his attention. He didn’t so much as glance in their direction, his focus fixed solely on the path ahead, leading to his classroom.
That’s when it dawned on me that he wasn’t ignoring them out of indifference. He couldn’t allow himself to get involved in a relationship, knowing it might distract him from his school priorities. It was remarkable that a young, healthy man could exhibit such self-discipline, willingly imposing celibacy upon himself in pursuit of his goals.
“What would Mom think of her prized son, if he suddenly showed an interest in pursuing women and his grades suffered as a result?” I asked myself, a devious idea forming in my mind.
With a clear plan in mind, my first opportunity became available Thursday morning, when Steve quietly slipped into the kitchen, settled into his chair, and sipped on his coffee. Mom, unaware of his presence, faced the stove with her back to us, tending to the hash browns. While my unsuspecting brother stared blankly in Mom’s direction, I rose and moved beside her.
“Mom, don’t you think it’s time we retire your old robe?” I asked. “I could bring home something from the store.”
Without turning, she replied, “It’s very comfortable. What’s wrong with it?”
I lowered my hands, grasped handfuls of the robe’s soft fabric, and lifted it upward in a swift motion, revealing the backs of her smooth, full thighs. I glanced at Steve and wasn’t surprised to see his eyes locked onto Mom’s creamy-white flesh.
Mom screeched, “Mia, stop that!” She turned around and when she spotted her son gawking at her, she grabbed my wrists, shoved downward, and covered herself, but not before he drank in her exposed, succulent flesh. Her face flushed pink, as she scolded, “That wasn’t nice to embarrass your brother like that. I’m certain he doesn’t want to look at an old woman’s legs.”
“You don’t have to worry about that. From the way he ignores women, I doubt if it bothered him that much, but it’d be a different matter if you were a guy,” I teased, my voice drifting off, having made my point.
“Stop that, Mia,” Mom shot back, her stern voice reflecting her parental stature. “Don’t tease Steven. We’ll love him the same, no matter his sexual orientation.”
She rarely called him by name, but when she did, it was always his full name, Steven. While I had always referred to him as Steve, she seemed to believe that using his proper name reinforced her role as an authoritative figure.
My brother, having had enough, interjected, “Quit, you two! I’m not gay and both of you know it. And Mom, as for your legs, Mia makes a good point. They’re great looking and you shouldn’t be embarrassed to show them off once in a while.”
Mom and I froze at his outburst and his revealing admiration for Mom’s legs. Realizing he might have overstepped his bounds, he sipped a drink of coffee, before suggesting, “Can we eat now so I won’t be late again?”
My smile lingered throughout the meal, knowing my plan had been set into motion. The anticipation of the upcoming evening excited me. I couldn’t wait to take the next step in guiding my brother to his inevitable downfall—lowering his standing with Mom.
Mom and I usually sat in the living room, half-watching sitcoms while reading a book each night while my brother holed up in his room. After my shower, I joined Mom and casually announced, “Mom, I think I’ll read my book in Steve’s room tonight while he’s working. It’s quieter and I don’t think he’d mind a little company.”
Mom’s brow creased slightly, her hesitation evident as she mulled over my request. Finally, she relented with a nod. “I don’t see a problem with that. Just don’t interrupt him while he’s studying.”
After a soft knock on his door, Steve called out for me to come in. Upon seeing the book in my hand, he looked up with curiosity. “What’s up, Sis? Anything you need me to do?”
“No, Mom’s watching something I don’t like, and I thought it’d be quieter in here so I can read,” I explained, giving him a playful pout. “Do you mind?”
He hesitated, his brow furrowing. “Well, I’m not exactly set up for company,” he said, gesturing vaguely around the room. “But I guess you could use the beanbag chair if you want. Wouldn’t you be more comfortable in your own room, though?” His voice carried a hopeful edge, clearly wishing I’d decline.
“No, this is perfect,” I replied, determined. I shoved the beanbag chair against the wall so he’d have a clear view of me, then flopped down into it with a satisfied sigh.
My robe rose a few inches above my knees as I curled my legs underneath me. Holding my book in a position where I could read while monitoring his glancing, I immersed myself in my story. After thirty minutes, I squirmed and twisted, causing my robe to rise and expose more of my upper leg. It wasn’t long before I noticed his eyes darting over to check me out.
Another hour passed before I stretched out my legs, unfolding them with a dramatic groan. The hem rode high enough to expose most of my thin, alabaster-white thighs. He didn’t even try to disguise his interest as he stared at my bare legs.
“Wow, no wonder these things went out of style ages ago,” I grumbled, stiffening my legs and flexing my feet to work out the kinks.
“Yeah, I should probably ditch it,” he agreed with a chuckle. “Sorry, I don’t have better seating options.”
“It’s fine,” I replied, my attention returning to my book. While he pretended to focus on his studies, it was clear he was more interested in looking at the length of my legs. It was working as intended. By the end of the night, he’d be so horny that he’d have to whack off and once that started, it wouldn’t take many evenings before he’d succumb to his horny urges and seek out a hot, young college girl.
For the next several nights, I repeated my subtle, taunting routine. He became more receptive to my visits, even coming downstairs one night when I stayed to talk to Mom. “Mia, are you coming up tonight?” he asked, his voice carrying a note of hope. Noticing Mom’s intrigued look by his sudden interest in my company, he quickly added, “It helps me relax and focus when you’re around. I didn’t realize how much being alone was affecting my concentration.”
His explanation seemed to convince Mom, as she waved her arms dismissively at me and said, “Go sit with your brother, Mia. We’ll continue our conversation in the morning. Good night, you two.”
I went to my room to prepare myself for the next phase, knowing my dear brother’s innermost desires were now in command. Slipping off my robe, I stood in front of the mirror, cupping my bare breasts. I tweaked my pink nipples until they filled with blood. “My brother isn’t the only horny one,” I groaned as my hand ran across my smooth mound and sunk into my dripping pussy. I was already leaking, thinking about teasing my victim.
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