Skip to content This is part 1 of the Blackmailing Siblings series.
*****
I slipped my key into the lock as quietly as possible. I’d just gotten back home after spending my evening with Sara, my girlfriend. I hung my jacket on the hook by the door. My life looked flawless from the outside: good-looking college sophomore with a devoted girlfriend, supportive family and decent grades. The kind of guy other parents pointed to as an example.
I kicked off my shoes. Mom was away until tomorrow, visiting her sister. So it was just me and my flirtatious older sister, Lily, in the house tonight.
My sister and I had been avoiding each other lately, passing like strangers in the hallway. After our last fight two weeks ago, she cornered me in the bathroom and pressed herself against me, asking me to shave her and go down on her. I’d pushed her away harder than I meant to, and I called her a porno freak on top of it. The hurt in her eyes had been real before anger replaced it. She’d slammed the door so hard a picture fell off the wall.
I went into the living room, and Lily lounged on the couch in a tank top and shorts that barely qualified as pajamas. Her long legs were stretched out, one foot bobbing to whatever was playing on her earbuds. When she saw me, she pulled one earbud out and smiled. Not her usual smile, but something sharper that made my skin prickle with warning.
“Well, look who finally made it home,” she said with a slight grin. She wore her dark, glossy hair loose. “How was your date with Saint Sarah?”
I cleared my throat. “Fine, just going to bed now.”
“So early? It’s Friday night.” She shifted, causing her tank top to ride up and expose a strip of pale stomach. “Mom’s not coming back till tomorrow afternoon, you know.”
“I know,” I said flatly, trying to keep my eyes on her face. “I’m tired.”
Lily studied me, her green eyes narrowed slightly. “You have been looking tired lately. Not sleeping well? Or is Sarah wearing you out?” She smirked. “Though I doubt it, from what I’ve heard through the walls.”
My face flushed hot. “Cut the shit, Lily.”
“Touchy tonight.” She swung her legs off the couch and stood up. “But you’ve been avoiding me for weeks now, little brother. I’m starting to think you’re mad at me.”
I stepped back, instinctively creating distance. “I’m not avoiding you. I’ve been busy.”
“Too busy to even look at me? Too busy to acknowledge I exist?” She took a step closer. “Is it because of what happened last time? When I said what I wanted from you?”
My jaw clenched. “I’m going upstairs.”
I tried to move past her, but she sidestepped, blocking my path to the stairs. Her scent hit me, that fruit shampoo mixed with musk. It was a scent that made blood rush south, turning me on.
“Remember what you said to me?” she continued, her voice dropping lower. “You called me disgusting and a porno freak. Said I needed professional help.” She was close enough now that I could see the pulse beating in her neck. “All because I admitted I wanted my brother’s mouth on me.”
My stomach knotted. “Stop it.”
“Why? Does it make you uncomfortable to hear me say I want you to lick my pussy? That I’ve fantasized about your tongue inside me?”
“Fucking hell, Lily,” I growled, but my body betrayed me. Blood rushed south, my cock stirring despite my disgust. Or was it disgust? The line was unclear. “You need to grow up and stop this sick game.”
“Game?” Lily’s smile widened. “That’s funny, coming from you.”
Something in her tone made me freeze. “What’s that supposed to mean?”
“It means your hypocrisy is showing,” she said, reaching into the pocket of her shorts. She pulled out her phone, tapped the screen a few times, then held it up.
The sound hit me first. It was a moaning girl, and not Sarah, but a girl named Mia, a girl I was having an affair with. But that wasn’t all. I could hear my own voice, “You like that, hot sis? Tell me how much you like your brother’s cock.”
My blood turned to ice. On the screen was a clear view of Mia and me in her bedroom, her legs wrapped around my waist as I thrust into her. Both our faces were clearly visible.
“Where—” My voice failed. I reached for the phone, but Lily snatched it away.
“Where did I get it?” She tucked the phone back in her pocket. “From your computer, dummy. That hidden folder isn’t as hidden as you think. You really should use better passwords than Sarah’s birthday.”
“You went through my computer?” I said, panic rising in my chest. “That’s private! You had no right—”
“Private?” Lily laughed. “Like all those videos you made? God, Alex, I didn’t take you for such an amateur pornographer.”
“It’s not what it looks like,” I said, knowing how pathetic it sounded.
“Really? Because it looks like you’re fucking a girl while she calls you ‘brother’ and you tell her what a good sister she is.” Lily’s eyes hardened. “The same fantasy you called me sick and twisted for having.”
My mind raced desperately. “Delete it. Please, Lily, delete the video.”
“Videos, plural,” she corrected. “And no, I don’t think I will.” She stepped closer, close enough that I could feel the forbidden heat radiating from her body. “Not unless we make a deal.”
“What kind of deal?”
“The kind where you stop being a hypocritical asshole and admit what you really want.” Her voice dropped to a whisper. “The kind where you get on your knees and put that mouth to better use than lying.”
“Are you fucking blackmailing me?” I asked, incredulous despite the evidence in front of me.
“I prefer to think of it as … corrective action.” Lily traced one finger down my chest, stopping just above my belt. “You do what I want, your videos stay our little secret. You refuse, and I wonder how Sarah would feel about your extracurricular activities? Or Mom or your friends?”
Nausea rolled through me, followed by a wave of anger. “You wouldn’t.”
“Try me.” Her expression was steel beneath the smile. “I’ve spent years watching you judge me, shame me and push me away, all while you were getting off on the exact same fantasy with someone else.”
I swallowed hard. “What exactly do you want?”
Lily’s smile widened. “For starters, you’re going to shave me, make me nice and smooth.” Her hand drifted to the waistband of her shorts. “Then you’re going to lick me until I come. Maybe twice, if you’re good.”
I shook my head, trying to clear it. “And what about … me?”
“Oh no,” she said, chuckling. “This isn’t about you getting off. This is about you serving me.”
My cock strained against my jeans, a fact I was desperately trying to hide. The mix of horror and arousal left me dizzy. “This is insane.”
“Maybe. But those are my terms.” She reached up and brushed her thumb across my lower lip. “And judging by that bulge you’re failing to hide, I think part of you is already on board.”
“I have a girlfriend,” I said weakly.
“The same girlfriend you’re cheating on with your fake sister?” Lily raised an eyebrow. “Please, save the moral high ground for someone who might believe it.”
She was right, and we both knew it. I had no leg to stand on, no defense that wouldn’t crumble under the weight of my own actions.
“So, what’s it going to be, Alex?” Lily asked, moving so close that our bodies were almost touching. She tilted her head up, her lips inches from mine. “Do I call Sarah? Or do you finally admit what you’ve been fighting all this time?”
I remained frozen, unable to answer, torn between self-preservation and the last threads of my pretended morality.
Lily’s hand slid around the back of my neck, pulling my head down so her lips brushed my ear. “Time to taste your real sister, little brother.”
My resistance crumbled like a sandcastle against the tide. The thought of Sarah seeing those videos, of my mother’s face as she watched me fuck a woman while calling her “sis,” was too much. I couldn’t let that happen.
“Fine.”
Lily’s face lit up with triumph. “What was that? I didn’t quite hear you.”
I gritted my teeth. “I said fine. You win.”
“That’s better.” She grabbed my wrist. “Upstairs … Now.”
She led me up the stairs like a prisoner being escorted to his cell, her grip never loosening. My mind raced, searching desperately for a way out that didn’t exist. The evidence was damning and the stakes too high. I was trapped.
When we reached the second floor, she pulled me toward the bathroom attached to her bedroom, a space I’d actively avoided for years.
The bathroom was sparkling clean. Everything was organized, from the arranged bottles of expensive products to the folded towels. It smelled like vanilla and roses.
“Nice, right?” she asked, noticing my surprise.
I remained silent, still processing the surreal situation. My sister, my actual sister, was about to undress in front of me. And I was going to let her.
Lily turned to face me, her back against the sink. “You look terrified,” she said, amusement dancing in her eyes. “Relax. You might even enjoy this.”
Before I could respond, she crossed her arms and pulled her tank top over her head. Her breasts bounced free, full, round, with pink nipples and matching quarter-sized areolas. I swallowed hard, trying to look away but failing miserably. They jiggled till they found equilibrium. They were creamy white with a sweet cleavage.
She hooked her thumbs into the waistband of her shorts and pushed them down her long legs, kicking them aside. Now completely naked, she stood before me without a hint of shame.
“What do you think?” she asked, turning slowly to give me a full view.
I couldn’t deny it. She was stunning. Her hourglass figure, the curve of her hips, the way her dark hair fell across her shoulders. My eyes traveled down to the patch between her legs, where dark curls stood in stark contrast to her pale skin.
“That’s what needs attention,” she said, following my gaze. “Been a while since I’ve had time for proper maintenance.”
I felt my cock straining painfully against my jeans, and I shifted uncomfortably, trying to hide my obviously thickening cock.
“Oh, please,” Lily laughed, noticing my adjustment. “Don’t pretend you’re not enjoying this. I can see that bulge from across the room.”
She turned away from me, bending over to start the bathwater. She flashed me her curvy ass and the glimpse of pink between her thighs.
“Get comfortable,” she instructed, testing the water temperature with her fingers. “This might take a while.”
I stood frozen, unsure what “comfortable” meant in this context.
Lily rolled her eyes. “At least take off your shirt. I don’t want it getting wet.”
Reluctantly, I pulled my t-shirt over my head, feeling strangely vulnerable as her eyes raked over my chest and abs.
“Not bad, little brother,” she murmured appreciatively. “Sarah’s a lucky girl. Too bad she’s getting cheated on.”
The barb stung, but I had no defense.
Once the tub was filled, Lily stepped in and lowered herself into the warm water with a sigh of relief. She leaned back, her breasts floating just below the surface, nipples peeking out like islands.
“You ever shaved a woman before?” she asked, reaching for a razor and shaving cream from the edge of the tub.
“I’m not twelve,” I replied defensively. “I’ve had girlfriends.”
“Right, but have you ever shaved them?” She held out the razor, her expression challenging. “It requires a steady hand and attention to detail.”
I took the razor, trying to ignore how surreal this felt. “I’ll manage.”
Lily spread her legs, propping her feet on opposite edges of the tub. The position exposed her completely, and I felt a sudden heatwave.
“Foam me up,” she said, handing me the can of shaving cream. “And be generous.”
I knelt beside the tub, squirting the white foam into my palm. I reached between her legs, applying the cream to her dark curls. The intimate contact made her sigh.
“Go on,” she said. “Make sure you get it all.”
I spread the foam carefully, covering every inch of her pubic area.
“Now the razor,” she said. “Go slowly, start from the top and work your way down.”
I followed her directions, drawing the razor carefully through the foam, revealing smooth skin beneath, and also her pinkish pussy.
“You got skills,” Lily said. “Such a talented little slave.”
My face burned at the word “slave.” “Fuck off,” I murmured.
She just giggled.
I rinsed the razor and continued working, focusing on the delicate folds and contours of her most intimate areas. Each stroke revealed more smooth, pale skin, and in the end, I could see her bare pussy in all its glory. Her labia were symmetric, blooming a bit outward. It was also swollen with lust, and I recognized the wetness, which was not from the water. She smelled sweet and musky.
When I finished, Lily ran her fingers over herself, parting her pussy lips to reveal her pinkish interior and inspecting my work. “Not bad at all,” she said. “Rinse me.”
I cupped water in my hands and gently washed away the remaining foam.
“Time for the next part,” she said, standing up suddenly. Water cascaded down her body as she stepped out of the tub. She grabbed a towel and patted herself dry before perching on the edge, her legs spread wide. “Your turn.”
“I’m waiting,” she said, leaning back on her hands, exposing herself completely.
I knelt between her legs, my face inches from her freshly shaved pussy. The scent of her arousal hit me stronger. I hesitated, my last moral barrier crumbling.
“Don’t make me ask twice,” Lily said, threading her fingers through my hair and pulling me closer.
I gave in, leaning forward to run my tongue along her slit. The first taste of her nearly made me groan. She was warm and wet, tasting of sweetness and musk. I told myself I was doing this under duress, but the hardness in my pants betrayed my true feelings.
“Fuck,” Lily moaned, tightening her grip on my hair. “Again, and do it slower.”
I obeyed, dragging my tongue from her entrance up to her clit, circling the pearly clit. Her thighs trembled on either side of my head.
“Hmm, yes,” she moaned. “Just like that.”
The wrongness of it all, my sister’s taste on my tongue, her naked body before me, should have disgusted me. Instead, it fueled a dark fire in my gut. Each moan she released sent a jolt straight to my cock. I wouldn’t admit it, not even to myself, but I was enjoying this more than I’d ever enjoyed going down on Sarah or any other girlfriend.
I worked my tongue deeper, exploring every pink fold and every spongy texture. Her pussy was responsive, clenching when I thrust my tongue inside her. I found her clit again, sucking gently while I slipped a finger inside her.
“No hands,” she said, slapping my wrist away. “Just your mouth, and I want to come on your tongue.”
Rolling my eyes, I dived back in, determined to make her climax despite my conflicted emotions. I lapped at her clit, licked her lips and slid my tongue inside.
“Fuck, Alex,” she said, grinding against my face. “Right there … don’t stop.”
Her wetness coated my chin as I sucked and licked, my jaw aching but unwilling to stop. The bathroom filled with the obscene sounds of my licking and her moans.
Suddenly, she stiffened, her thighs clamping around my head. “I’m going to come,” she said. “Keep going, don’t you dare fucking stop—”
Her words dissolved into a cry as her orgasm hit. I felt her pussy pulse against my tongue, and then a rush of warmth flooded my mouth and face. She was squirting, her nectar spraying across my cheeks and chin, soaking my face completely.
I kept licking through her climax, drinking her in, my own arousal painful in its intensity. She finally pushed my head away, her chest heaving.
“Holy fuck,” she breathed, looking down at me with glazed eyes. “You’re better at that than I expected.”
I sat back on my heels, my face dripping with her juices, unsure what to say. Part of me felt disgusted with myself, but a larger part felt a sick pride in how thoroughly I’d made her come.
“Thank you,” she said, her voice soft with genuine gratitude. “That was … exactly what I needed.”
I wiped my face with the back of my hand, starting to stand. “We’re done, right?”
She caught my wrist, pulling me close. “Not quite … You’re going to do that again before I go to sleep tonight,” she whispered against my lips. “I want to fall asleep with my taste in your mouth and my cum on your face.”
“How many times do you want me to lick you?” I asked.
“Whenever I want,” she said, crossing her arms under her boobs and giving them a gentle lift. “Or else … I’ll call Sarah.”
“Fine,” I said, realizing I didn’t have much of a choice.
“You can go clean up,” she said, suddenly casually, as if we hadn’t just crossed an unthinkable line. “I expect you in my room at midnight.”
To be continued
If you’d like to support my writing, you can purchase full-length incest novels with deeper storytelling and stronger character development here: brother sister incest eBooks.
Or if you want to read part 2: I Blackmailed My Sister