Ethan's Nieces
Copyright© 2025 by sublock
Chapter 1: The Housesitters
Incest Sex Story: Chapter 1: The Housesitters - A young man comes home from his first year of college to find that his family's changed... a lot.
Caution: This Incest Sex Story contains strong sexual content, including mt/ft Ma/ft mt/Fa ft/ft Fa/ft Teenagers Consensual BiSexual Heterosexual Fiction Sharing Incest Mother Son Brother Sister Father Daughter Uncle Niece Nephew Rough Group Sex Orgy Swinging Anal Sex Cream Pie Double Penetration Exhibitionism Oral Sex Voyeurism
Five hours in my beat-up Honda Civic left me ready to collapse on the couch for about twelve hours straight. My back ached, my eyes were dry from staring at highway lines, and I wanted nothing more than the silence of an empty house. Mom and Dad had left two days ago for their European cruise — some deal they’d gotten through Dad’s union — and I’d told them I’d be home from my freshman year by Thursday.
Except when I pushed open the front door, I heard music. And voices. Female voices, laughing upstairs.
“Hello?” I called out, dropping my duffel bag in the foyer.
Footsteps thundered down the stairs, and then Mia appeared at the landing. My brain did this weird stutter thing because she’d changed since Christmas. My older brother David’s daughter — seventeen now, a senior — stood there in a tank top and boy-shorts underwear. No bra. I could see ... everything through that thin fabric.
“Ethan!” She bounced down the last few steps, and I actively forced my eyes to stay on her face. “We didn’t know you were coming back today!”
“I ... uh. Mom said the house would be empty?” It came out like a question.
“Housesitting!” Another voice from upstairs. Lily appeared at the top of the stairs — Mia’s younger sister, fifteen and a sophomore. She wore a sports bra and sleep shorts that barely counted as clothing. “Your parents asked us to water the plants and whatever.”
“Oh.” I stood there like an idiot, very aware that I was technically these girls’ uncle despite being only a year older than Mia. David had started young—like nineteen young—which made family reunions weird. “Cool. That’s ... cool.”
“You look like death,” Lily said, coming down the stairs. “Long drive?”
“Six hours.” I picked up my bag like it was a shield. “I should probably just ... go unpack. Or sleep. Yeah.”
“We put clean sheets on your bed already,” Mia said, and was it my imagination or did her voice drop lower? “Figured you’d be tired.”
“Thanks.” I edged toward the stairs, hyper-aware of how much skin they were showing. This was fine. They were just comfortable. Nothing weird about it. “I’ll just...”
“Want to watch something later?” Lily asked. “We were about to start this reality show that’s absolutely terrible.”
“Maybe. Probably. We’ll see.” I was already halfway up the stairs, practically running.
Behind me, I heard Lily whisper something and Mia’s quiet laugh. My face burned.
An hour later, after a shower that was mostly cold water and a stern internal lecture about boundaries, I headed back downstairs in basketball shorts and a t-shirt. The girls were on the couch, still in minimal clothing. Mia had changed into an oversized t-shirt that kept sliding off one shoulder. No bra underneath. Lily was still in that sports bra.
“There he is!” Lily patted the couch between them. “Come watch this trash with us.”
The couch wasn’t big. Dad had gotten it from a buddy who was moving. When I sat down, both girls immediately pressed against me, warm and soft and way too close.
“This show is so dumb,” Mia said cheerfully as some reality dating show started playing. “But that’s what makes it great.”
They kept up a running commentary that was actually pretty funny. Lily had this deadpan delivery that made me laugh, and Mia would add these little observations that were weirdly insightful for a show about people making out in hot tubs.
About twenty minutes in, I noticed Mia’s hand on my thigh. Just resting there. Casual.
My body noticed too. My cock started to stiffen in my shorts, and I prayed neither of them would look down.
Then her hand moved. Just an inch higher. Her thumb stroked my inner thigh.
I glanced at her, but she was staring at the TV like nothing was happening. On my other side, Lily shifted, pressing closer. Her breast pushed against my arm.
“This is so boring,” Lily announced. “Like, nothing’s even happening.”
“Yeah?” Mia’s hand slid higher. “Maybe we should do something more interesting.”
My heart hammered. “What ... what are you doing?”
“What do you mean?” Mia’s hand pressed against my half-hard cock through my shorts. “Oh. You mean this?”
“We should—” I started, but Lily’s hand joined her sister’s on my other thigh.
“Should what?” Lily’s voice was close to my ear now.
“You’re my nieces.” It sounded weak even to me.
Mia laughed, and her hand squeezed me through the fabric. I was fully hard now. “Is that why you’re hard right now?”
“I’m not—” But I obviously was.
“Come on,” Lily whispered. “We can tell you want to.”
This was insane. This was wrong. I should get up and leave and probably call someone, except my cock was throbbing and Mia was looking at me with these dark, hungry eyes, and—
Mia moved. She slid off the couch and knelt between my legs, looking up at me. Her hands went to my waistband.
“Tell me to stop,” she said softly. “If you really want me to.”
I opened my mouth. Nothing came out.
She grinned and pulled my shorts down. My cock sprang free—I’d gone commando after the shower—and both girls stared at it.
“Oh my god,” Lily breathed. “Ethan, you’re like ... really big.”
“Thanks?” What the hell was I supposed to say to that?
Mia wrapped her hand around my shaft, and I gasped. Her hand was soft and warm, and when she stroked me, I couldn’t hold back a groan.
“Can I touch it too?” Lily asked, like she was asking to borrow my phone.
Mia shifted to let her sister’s hand join hers. Both girls touching my cock, stroking me in tandem, and my brain couldn’t process this. Shouldn’t I stop this? Wasn’t this—
Mia leaned forward and licked the head of my cock.
“Oh fuck,” I groaned.
“Language,” Mia said automatically—something she must have picked up from her parents—then took me into her mouth.
Her mouth was hot and wet, her tongue swirling around the sensitive head. She took me deeper, and I felt myself hit the back of her throat. She didn’t gag. She just kept going.
“That’s so hot,” Lily said, watching her sister suck my cock. Her hand cupped my balls, rolling them gently. “When did you last come? You feel really full.”
I couldn’t answer. Mia was bobbing on my cock now, making wet sounds that filled the room. Spit ran down my shaft.
“Let me try,” Lily said.
Mia pulled off with an audible pop. “Go ahead.”
Lily didn’t hesitate. She took my cock into her mouth, moaning around it. She wasn’t as experienced—she gagged when she tried to go deep—but the enthusiasm made up for it.
Mia pulled her t-shirt off. She was naked underneath. Small breasts, dark pink nipples, flat stomach. She hooked her thumbs in her underwear and slid them down. Her pussy was completely bare, neat and tight, and I could see she was wet.
“Lily, get naked,” Mia said.
Lily pulled off my cock and quickly stripped. Her body was curvier than her sister’s—fuller breasts, wider hips. When she shimmied out of her shorts, I saw her pussy was bare too. Puffier than Mia’s, her slit more pronounced.
“Jesus,” I muttered.
“Come on,” Mia grabbed my hand. “Bedroom. Couch is too small.”
They pulled me upstairs, both completely naked. I followed in a daze, my cock bobbing in front of me. They led me to my room and pushed me onto the bed.
Mia climbed on top of me, straddling my hips. Her bare pussy pressed against my cock. She was really wet—I could feel it coating my shaft as she ground against me.
“I’ve been thinking about this for months,” she admitted, reaching down to position my cock at her entrance.
“Mia, we really can’t—”
“Too late.” She sank down on my cock.
Tight. She was so tight. Her pussy gripped my shaft like a vice as she lowered herself, taking me inch by inch. When she bottomed out, we both groaned.
“Oh my god,” she gasped. “You’re so deep.”
She started riding me, lifting up until just the head was inside her, then dropping back down. Her small breasts bounced, and I watched my cock disappear into her tight pussy over and over. Her cream coated my shaft, making everything slick.
Lily climbed onto the bed beside us, spreading her legs. Her pussy was right there—swollen and wet, her inner lips peeking out, cream leaking from her hole.
“Eat me out,” Lily said. Then, more awkwardly, “Please? I’ve never ... no one’s ever done that to me.”
I’d never done it either, but with her pussy inches from my face and Mia bouncing on my cock, I couldn’t say no. I leaned forward and licked up her slit.
She tasted sweet and musky, and she moaned immediately. “Oh! Oh that’s ... don’t stop.”
I found her clit and circled it with my tongue. Lily’s thighs clamped around my head, and she ground against my face. Her cream smeared across my chin as I licked her.
“You’re doing so good,” Mia panted above me, riding me harder. “Eating your niece’s pussy while I ride your cock. This is so messed up.”
It was. But that made it hotter somehow. My cock throbbed inside Mia.
“I’m gonna come,” Lily gasped suddenly. “Oh god, oh god—”
Her pussy spasmed against my mouth, and she screamed, grinding down on my face. I kept licking through her orgasm, tasting her cream flood my tongue.
Mia was close too. Her riding became erratic, her pussy fluttering around me. “I’m coming too,” she moaned. “Come with me. Come inside me.”
“I can’t,” I gasped. “You’ll get pregnant.”
“I’m on the pill,” she said, slamming down hard. “Now come!”
Her pussy clamped down, milking my cock, and I couldn’t hold back. My balls tightened and then I was coming, shooting deep inside her. She screamed as she felt me fill her, her whole body shaking.
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