I never meant to find them. My brother’s laptop sat open on the kitchen table one night after he crashed early, and the folder labeled “late night audio” pulled me in like it had hands. I clicked. The first file started with heavy breathing, then a low male voice whispering, “Sis, you know you shouldn’t be in my room this late.” My stomach dropped. It was his voice. The woman answering sounded recorded, soft and shaky at first, then moaning his name while he described exactly what he’d do if she climbed into his bed. I listened to the whole thing with my hand between my legs, coming so hard I had to bite my wrist to stay quiet.
That was the start. Every night after that I stole another file. He had dozens. All incest audio sex stories, all in his voice, all about a big brother teaching his little sister how to suck cock, how to take it deep, how to beg for it raw. Some were just him jerking off while he talked dirty about her pussy. Others had a second voice, a woman he must have paid or convinced to play along, whimpering “brother” while he told her to spread her legs wider. I got obsessed. I started wearing his old shirts to bed, nothing underneath, and playing the files on low while I fingered myself to the sound of him saying the word “sister” like it was the dirtiest thing in the world.
One Friday he came home drunk and left his phone unlocked on the couch. I took it to my room, plugged in earbuds, and found the newest recording. It was only ten minutes long. His voice sounded rougher, almost angry. “You keep listening, don’t you? I know you do. I left the folder open on purpose.” My whole body went hot. The recording kept going, him describing how he’d bend his sister over the kitchen counter and fuck her until she couldn’t walk straight. Then he said my name. Not the fake sister name. My actual name. “You like that, don’t you, little sis? You’re probably touching yourself right now.”
I didn’t even think. I walked straight to his room, pushed the door open, and climbed onto his bed while he was still half-asleep. He woke up when my hand wrapped around his cock through his boxers. “The recordings,” I said. That was all. He stared at me for two seconds, then yanked my shirt off and sucked my nipple so hard I gasped. “You want the real thing?” he asked. I nodded. He flipped me onto my stomach, pulled my hips up, and shoved two fingers inside me without warning. “Fuck, you’re soaked. Been listening to me talk about this pussy for weeks, haven’t you?”
He didn’t bother with slow. He pulled his cock out, lined up, and sank in deep on the first thrust. I bit the pillow and came almost immediately, the wet sound of him fucking me filling the room. He kept talking the whole time, the same filthy lines from the audio files but now right in my ear. “That’s it, take your brother’s cock. You were made for this. Say it.” I said it. Over and over. “I’m made for my brother’s cock.” He pulled out, flipped me again, and fed his dick into my mouth while he played one of the old recordings on his phone. Hearing his voice describe exactly what he was doing to me while he was actually doing it made me come again without touching myself.
We didn’t stop that night. He fucked me in every position he’d described in those files. On my back with my legs over his shoulders so he could watch his cock disappear. On my knees with my face in the mattress while he slapped my ass and called me his dirty little sister.
He even recorded us. The new audio file we made together was the longest one yet, both of us moaning and talking over each other, him making me repeat every nasty thing he wanted to hear. When he finally came, he pulled out and painted my tits while the recording caught every wet sound and every filthy word.
Afterward we lay there breathing hard, the phone still recording soft static and our heartbeats. He kissed the top of my head and said, “We’re not deleting any of them.” I smiled against his chest and told him we should make more. We did. Every week we added another incest audio sex story to the folder, sometimes just the two of us talking dirty while we touched, sometimes full recordings of him pounding me until I screamed his name. The files got longer, louder, and so much dirtier. And every time I hit play, it still felt like the first time I discovered what my brother really wanted from his sister.
