Skip to content This is part 2 of the Blackmailing Siblings Series. For part 1, My Sister Blackmailed me.
*****
Three weeks later, and I still found myself kneeling between Lily’s spread thighs for what had to be the twentieth night in a row. This had become our routine, a ritual I both dreaded and craved with a sick, desperate hunger that was eating me alive.
“Right there,” Lily moaned, cupping my neck. “God, your tongue is getting so good at this.”
I didn’t respond, just kept working her clit and wet pussy. I knew her body better than Sarah’s now, knew exactly how to build her up, how to make her thighs tremble and how to reduce my older sister to begging whimpers.
After I came off her pussy with a smack, it was time for some toys. I slipped the vibrator inside her, angling it toward that spot that made her back arch off the bed. Her freshly shaved pussy glistened under her bedside lamp. I’d done that for her earlier, kneeling in the bathroom while she sat on the counter, legs spread, giving me instructions like I was her personal servant or sex slave.
Which I guess I was.
“Slower,” she said. “Edge me … make me wait for it.”
I obeyed, easing back on the pressure, moving my tongue in circles while keeping the vibrator just shy of where she needed it most. Her frustrated whine sent a jolt straight to my cock, which strained painfully against my boxers. I’d stopped wearing pants to these sessions weeks ago. What was the point when I left with blue balls every time anyway?
“Please,” she said after ten minutes of teasing. “I need to come now.”
I increased the pressure, sucking her clit between my lips while pushing the vibrator deeper. Her thighs clamped around my head as she came with a shuddering cry, her pussy juice coating my chin, mouth and face. I didn’t stop, knowing she expected at least two more.
By the third orgasm, I’d taken her to heaven, her body hypersensitive as I licked and sucked relentlessly. The vibrator buzzed inside her while I focused on her swollen clit, my jaw aching, my own need almost unbearable.
When she finally pushed me away, I sat back on my heels, wiping my face with the back of my hand. My erection tented my boxers, a wet spot forming where pre-cum had soaked through the fabric. Three weeks of servicing her every night, and not once had she touched me in return.
“Lily,” I said. “Please, just once. Let me feel your mouth or ride me … anything.”
She laughed. Then she traced my jaw with her foot, the gentle pressure both teasing and dismissive.
“No, you know the rules. You lick me, I keep your dirty little secret. That’s it.”
I hung my head, frustrated beyond words. Every night it was the same, I pleasured her until she could barely move, then crawled back to my room with an aching cock and shattered dignity.
“You can go now,” she said, already reaching for her phone, dismissing me as if I were a servant who’d completed his duties.
I stood and left without another word. Back in my own room, I jerked off furiously, my sister’s taste still on my tongue, her moans echoing in my ears. I came harder than I ever had with Sarah, shame and pleasure twisting together until I couldn’t tell them apart anymore.
*****
The next night followed the same pattern, except this time, when Lily went to take her post-orgasm shower, I lingered in her room. The sound of water hitting tile gave me cover as I spotted her laptop sitting open on her desk.
I paused for only a moment before sliding into her chair. This had to end. I needed leverage, something to even the playing field. Maybe she had backups of my videos with Mia. If I could delete those, I’d be free of this twisted arrangement.
Her laptop wasn’t password-protected. Why would it be when Mom never snooped, and I was supposedly under her complete control? I clicked on her browser, intending to check her cloud storage or email, but her bookmarks caught my eye.
OnlyFans login, twitter promo links and NSFW Reddit threads.
My heart rate spiked. I clicked on the OnlyFans bookmark, and it loaded directly to a creator dashboard. She was already logged in. The username made my blood run cold, LilBratSis69.
Subtle enough to be anonymous to strangers, but painfully obvious to me now.
I clicked through her content. The page was packed with videos and images, all with titles that made my stomach drop:
Little sis needs big bro’s tongue (solo play).
Blackmailing my judgmental brother into eating me out (roleplay).
Cum watch me edge myself while thinking about my brother.
I clicked on one video at random. Lily appeared on screen, her face clear as day, a vibrator in hand as she spread her legs.
“I’ve been so bad, big brother,” she moaned, sliding the toy over her clit. “Are you going to punish me with that tongue of yours? Make me beg for it?”
I clicked another. This time she was using a dildo, working it slowly inside herself while narrating a fantasy about “my stuck-up brother finally admitting what he wants and worshiping my pussy all night.”
There were dozens of these videos. Some were solo masturbation, others were audio clips where she described in explicit detail what she wanted “little brother” to do to her. A few even featured blurred-face roleplay where she pretended to blackmail someone into going down on her.
The same scenario she was forcing me to live out in real life.
I clicked on her earnings tab and felt my jaw drop. She wasn’t just making a little money, she was pulling in thousands of dollars per month. The subscriber count was in the thousands, with countless comments begging for more taboo content.
My sister was monetizing the very fantasy she was blackmailing me to fulfill.
The realization hit me like a physical blow. All this time, while I was on my knees every night with nothing to show for it but an aching jaw and blue balls, she was selling the same fantasy to strangers online, making bank while I suffered.
Also … Mom would absolutely lose her mind if she knew Lily was doing online sex work. It would be nuclear, possibly worse than if my videos with Mia came out.
Something snapped inside me. The humiliation of being used, the twisted arousal at seeing her perform for others and the knowledge that I’d been servicing her for free while she profited from the fantasy … it all crashed together in a wave of fury and lust.
I grabbed her phone from the nightstand, logged into her OnlyFans account there too, and waited. The shower stopped, and a few minutes later Lily walked in, wrapped in a towel, her hair wet and slicked back.
She smiled when she saw me waiting. “Eager tonight, aren’t we? Let me dry off first.”
I held up her phone, the OnlyFans page clearly visible. “You’ve been selling this shit online the whole time? ‘Little sis needs her big bro to lick her clean’? You’ve got thousands of fans paying to hear you moan about the exact thing you’re making me do for free?”
The color drained from her face, her confident smile faltering for the first time since this all began. “You went through my computer?”
“Like you went through mine? All this time, you’ve been blackmailing me, making me feel like a slave for having the same fantasy you’re broadcasting to the whole fucking internet!”
She recovered quickly, crossing her arms over her chest. “So what? That’s different. Those are just videos. You actually fucked a girl while pretending she was your sister.”
“And you’re actually making your brother eat you out while filming yourself talking about it!” I was almost shouting now. “What do you think Mom would say about her precious daughter’s little online business?”
For once, Lily looked genuinely scared. “You wouldn’t.”
“Why not? You’ve had no problem threatening me for weeks.” I felt a surge of control I hadn’t experienced in weeks. The tables had turned completely. “Delete your Mia files,” I said. “Give me a blowjob and let me inside that dripping pussy you’ve been teasing me with, or I’ll send the OnlyFans link to Mom. Imagine everyone knowing their sweet daughter is a taboo OnlyFans whore begging for ‘little brother’ in her videos.”
Lily’s eyes widened, a flicker of fear crossing her face before settling into anger mixed with arousal. Her chest rose and fell rapidly beneath the towel.
“You wouldn’t dare,” she whispered, but the uncertainty in her voice told me she knew I would.
“Try me,” I said, throwing her own words back at her. “How many subscribers would you lose if they knew you were actually fucking your brother instead of just pretending?” I took a step closer. “Delete the Mia videos, now.”
She swallowed hard, then nodded slowly. “Fine.”
I watched as she took her laptop, opened her cloud storage, and permanently deleted all traces of my videos with Mia. I made her check her trash folders, her backup drives, everything. When I was satisfied they were gone, I turned my attention back to her.
“Now the towel.”
She loosened her grip, letting the towel fall to the floor. Despite everything, my cock hardened instantly at the sight of her naked body, her perky, jiggly tits and her bald, moistening pussy.
“On your knees,” I said, surprised at how naturally dominance came to me.
For a moment, I thought she might refuse. Then, slowly, she sank to her knees in front of me, her eyes never leaving mine.
“You’ve been a real bitch, Lily,” I said, pushing my boxers down. My cock sprang free, inches from her face. “Three weeks of blue balls while you got off and made money selling the fantasy, time to make it up to me.”
She licked her lips, a gesture that sent blood rushing to my already throbbing erection. “I’ve never actually done this with you before,” she said quietly. “Just thought about it.”
“Well, now you get to live out your fantasy content,” I replied coldly. “Open your mouth.”
She parted her lips, and I guided my cock between them, groaning as the wet mouth enveloped me. She sucked a little, came off, swirled her tongue around the head and swallowed me again.
“Hmm,” I said, cupping her neck the same way she’d cupped mine. “Take it deeper.”
She gagged, but I held her firmly in place, pushing farther until I felt the back of her throat squeezing the purple crown. She gagged more, her eyes watering, but I didn’t relent.
“This is what you wanted, isn’t it? Your little brother’s cock in your mouth? All those videos about how much you wanted to taste me?”
She moaned around my shaft, the vibration sending sweet pleasure shooting up my spine. I began to move her head back and forth, setting a rhythm that had me teetering on the edge embarrassingly fast. But it wasn’t just the sensation of my cock in my sister’s mouth, but the visuals of it as well. I just loved the way her lips stretched, how she looked me in the eyes occasionally and how her eyes became watery whenever she tried to take me deeper. She was way more experienced than Sarah, even if she struggled to gobble up my cock.
“I’m going to come,” I told her, tightening my grip on her hair. “And you’re going to swallow every drop.”
Her eyes widened, but she didn’t pull away, she only bobbed her head forward. Seeing my cock bulge against her throat, I thrust deeper, once, twice, and then I was erupting, shooting hot spurts down her throat. She gagged again but managed to swallow as she took everything I gave her.
I sighed in relief, and when I finally released her, she gasped for air, wiping her mouth with the back of her hand. Her cheeks were flushed, and to my surprise, when I glanced down, I could see wetness glistening between her thighs, soaking the floor.
“Get on the bed,” I said, already feeling my cock beginning to stir again. “On your back.”
She complied without argument, spreading her legs as she positioned herself on the mattress. Her pussy was swollen and wet, practically dripping onto the sheets.
“Look at you,” I said, stroking myself back to hardness. “All that talk about making me serve you, and here you are, soaking wet just from sucking me off.”
“Shut up,” she muttered, but there was no real heat in it.
I climbed onto the bed, positioning myself between her thighs. “I should make you beg for it,” I said, running the head of my cock through her slick folds. “Like you made me beg to touch you.”
“Please,” she whispered, the word falling from her lips before she could stop it.
“Please what?” I pressed, teasing her entrance.
“Please fuck me, Alex,” she said, her eyes locked on mine. “I’ve wanted this for so long.”
That admission, so raw and honest, broke something in me. I thrust forward, burying myself inside her in one smooth motion. We both moaned, she from the sudden fullness and me from the incredible tight heat of her pussy gripping my cock.
“Fuck,” I said, beginning to fuck my older sister. “You feel amazing.”
She wrapped her legs around my waist, pulling me deeper. “Harder,” she demanded, her nails digging into my shoulders. “I want to feel you for days.”
I obliged, pounding into her with all the pent-up frustration and desire of the past weeks. The bed creaked beneath us, the headboard slamming against the wall with each thrust.
“Is this what your subscribers want to see?” I growled, reaching between us to rub her clit. “Their precious LilBratSis getting fucked by her actual brother?”
“Yes,” she moaned, arching her back. “God, yes.”
I could feel her tightening around me, her orgasm approaching. “You going to come on my cock? After all those nights making me use you with my tongue?” I was relentless now, driving into her so our flesh slapped.
Her back arched off the bed as she came, her walls clamping down on me as she writhed beneath me. Gosh, she was hot when she orgasmed, from her stiff nipples to her pink flush. I loved it.
“I’m coming,” I said, my rhythm faltering as pressure built at the base of my spine.
“Don’t pull out,” she said, locking her ankles behind my back. “I want to feel you come inside me.”
“What about—”
“I’m on birth control,” she said, grinding against me. “Now fucking fill me up.”
That was all I needed to hear. With a final thrust, I buried myself to the hilt and exploded, pumping rope after rope of hot cum deep inside her incestuous pussy. The taboo of it, coming raw in my sister’s pussy, only intensified the pleasure, making my orgasm seem endless.
Once my cock became too sensitive, I pulled it out of her cum-drenched hole. Then I finally collapsed beside her, and we both lay there panting, staring at the ceiling.
“Fuck,” she whispered, sounding almost reverent. “That was amazing.”
“Yeah,” I agreed, unable to find better words.
We lay in silence for a few minutes, processing what had just happened. I felt her shift beside me, and when I looked over, she was propped up on one elbow, studying my face.
“So what now?” she asked.
I mulled it over. We both had dirt on each other, and we were both horny and obviously attracted to each other. “Let’s call a truce.”
“Alright … but we’ll take turns pleasing each other, right?” she asked, as if she were addicted to sibling sex.
“Of course,” I said. “And don’t try to blackmail me again.”
She grinned wickedly. “No promises,” she said and stuck her tongue out. “I’m still older than you.”
I rolled my eyes and got out of her bed before Mom came home. “I’ll take a shower.”
“Love you,” she said as she reached for some wipes to clean her well-fucked pussy.
I stopped at the threshold and looked back at her. “Love you too,” I said, meaning every word.
The end.
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 similar stories, click here: brother sister incest stories