Ruin me, Stepsister.

Emma's POV

I never meant for it to happen.

Especially not with my stepbrother, Jake, the tall, ripped, 28-year-old man who had moved back home after college while I was still finishing my last year. He was supposed to be the annoying older guy who teased me about my short skirts and told me to study more. He was supposed to be the man who would stand in the gap for my parents and teach me right from wrong. But instead, he became the man whose huge cock I couldn't get enough of.

It started innocently enough. Mom and Dad were away for a two-week vacation, leaving the house empty except for us. I was 19 and had returned home from college for the summer. Jake had just broken up with his girlfriend over some issues he would only give mumbled responses about whenever I asked. I knew he was definitely the problem.

Then it started. Maybe it was the tension of being locked up in the house with him that began to build. At first, I thought it was all because we were just seeing each other after being away for a long time, or maybe because I wouldn't stop noticing him everywhere. Until I caught myself stealing glances at him during his gym sessions, licking my lips whenever he walked around shirtless with that massive bulge in his sweatpants. That was still normal, right? Maybe to me. But that didn't end there. I found myself intentionally wearing tight shorts that hugged the full shape of my pussy, just to see if he'd look. I knew at this point, even without anyone telling me, that I was already crossing the line and needed to stop. But I couldn't. I was addicted. I even went as far as fingering myself whenever he was around.

Yes, I did all of that. I'm sure you have no idea how his cock was driving me crazy. I had seen it on many occasions.

One of the days I'll never forget was last summer. His girlfriend came over, and while he fucked her, my dirty instincts prompted me to check on them. I wanted to stay in my room, but I couldn't resist when I heard the sounds of her moans. It wasn't normal. It was the kind of sound you only hear when a huge cock, a really huge cock, is splitting a pussy open. I left my room without thinking. When I got to his door, I peeped through the keyhole, and that was when I saw it. His cock. Huge. Mighty. Monstrous. I had to cover my mouth to stop myself from screaming, using my other hand to hold the first one in place. It was that serious. How the fuck was he keeping something that huge between his legs? I thought.

Since then, I've been nursing my feelings for him, which are plainly sexual. No sibling love or anything like that.

This night, I lay on my bed running my hands through my hair. I couldn't sleep. I was horny as fuck. My pussy was slick and leaking, even after I had fingered myself multiple times. It didn't help at all. Not even a bit. I tried using a vibrator, but nothing came close to what a real cock, Jake's cock, would do to my pussy.

The thought of him probably lying naked on his bed made my fingers slip between my legs again. My mind wasn't helping. It kept picturing us together: his cock in my pussy, in my mouth, all kinds of dirty stuff and crazy scenarios.

When the room started feeling too hot and I realized I couldn't take it any longer, I went downstairs to get some water. I hoped it would soothe the dryness in my throat. I took a second glass, and it somehow tasted like cum, Jake's cum. I drank it up, licking the sides of the cup, moaning his name while my hands unconsciously moved down to work my pussy. My fingers moved fast, making me cum all over the kitchen floor.

I felt a bit of relief as the ache in my pussy slowly faded. I leaned against the counter, staring into space until my eyes started to feel heavy.

I headed back to my room, taking deliberate steps so I wouldn't fall. I had stayed in the kitchen for over an hour just staring, so you can understand how intoxicating sleep felt.

While on the stairs, I heard something. I paused to listen, my eyes widening. It was an unusual whimpering sound I couldn't quite name.

I traced it to the living room and went down, taking slow and deliberate steps. When I reached the living room doorway, I froze.

I saw something I didn't get to see every day. It was Jake, my stepbrother.

He sat on the couch with his pants around his ankles, stroking the biggest cock I had ever seen in my life. It was thick, veiny, easily ten inches and still growing harder in his hand. The head was fat and leaking pre-cum. Trust me, this wasn't the cock I had caught him with the other day. Yes, he was huge before, but not like this. It had grown rock hard now, his hands unable to fully cover its length.

My pussy clenched instantly, soaking my panties. I stared at his length and stepped closer for a full view.

He looked up and saw me. Instead of stopping or covering himself, he smirked. "Like what you see, little sis?"

My eyes almost popped out. Why was he asking me that? My throat tightened and my breath grew hot. Maybe I should have run back to my room, but instead, unconsciously, I nodded and walked toward him, my thighs pressing together.

"It's... really huge." The words escaped my lips before I could stop them.

He chuckled and stroked it slowly, his eyes turning dark. "Come here."

I did without even thinking. I sat on the couch beside him, unable to take my eyes off his monstrous cock. He reached over, slid his hand under my tiny sleep shorts, and found me dripping.

"Fuck, you're soaked," he growled. "Been thinking about this cock all day, haven't you?"

I nodded, whimpering as his thick fingers rubbed my swollen clit. He pushed two fingers inside me, stretching me, and I moaned loudly. "Jake... please..."

He fingered me slowly, letting his fingers go deep, curling them against my G-spot while his thumb worked my clit. "Tell me what you want, sis."

"Your cock," I gasped. "I want to feel it."

He pulled his fingers out, shiny with my juices, and brought them to my mouth. I sucked them clean like a good girl. Then he stood up, his massive cock swinging heavily between his legs, and pulled me to my knees.

"Suck it."

I did. I could barely fit the head in my mouth. It stretched my lips wide, the salty pre-cum coating my tongue. I bobbed as best I could, gagging when he pushed deeper, tears pricking my eyes. Jake groaned, his hand in my hair, fucking my face slowly.

"Such a good little cocksucker. My stepsister's mouth feels better than I imagined."

His cock fucked my mouth faster until I felt warm liquid flood my mouth. He pulled me off, strings of cum connecting my lips to his cock, and bent me over the couch. He rubbed that fat head up and down my soaked slit, teasing my entrance.

"Beg for it."

"Please, Jake... fuck me. Stretch my tight pussy with your huge cock."

He slammed in.

I screamed. The stretch was insane: burning, full, overwhelming. He was so deep I felt him in my stomach. He didn't give me time to adjust. He started pounding me hard, his balls slapping against my clit, the couch creaking under us.

"Fuck, you're tight," he growled. "This little cunt is gripping me so good."

I came hard within minutes, squirting around his thick shaft as he railed me. He didn't stop. He fucked me through it, deeper and harder, one hand slapping my ass until it turned red while the other rubbed my clit.

"Gonna fill this pussy," he grunted. "Gonna breed my little stepsister."

"Yes! Cum inside me!" I cried.

He roared and slammed deep, flooding me with hot cum. Load after load pumped into me until it leaked out around his cock and ran down my thighs.

He slowed down a bit, grinding his cock inside me and pushing his seed deeper. Then he pulled out with a wet pop and spun me around, pushing me to my knees again.

"Clean it up," he growled.

I sucked his cum-covered cock clean, tasting our combined release, my pussy still throbbing and leaking.

That was just the beginning, and I was already addicted.

And we still had thirteen more days alone in the house.

Emma's POV

By the end of that first short, explosive fuck on the couch, I was partly ruined. I still wanted more of him. Jake had the kind of cock you could never get enough of no matter how hard you tried, or maybe I was just the unsatisfied one.

My pussy throbbed and pulsed, leaking his thick, warm cum down my inner thighs in slow, sticky trails. My legs felt like jelly, my tits were marked with his handprints, and my mind was spinning from how deep he had just stretched me. That was the point I tried to make earlier. We had just had a short fuck, but he made sure he bred me really hard. That was better than anything else. Another good part was that he wasn't satisfied. His massive ten-inch cock was still half-hard, glistening with our mixed juices and twitching against his thigh as he looked at me with dark, hungry eyes that begged for more.

"To the shower," he growled, scooping me up in his strong arms and pinning me against him. My legs wrapped around his waist automatically, his thick cock rubbing against my soaked, sensitive slit with every step he took up the stairs. The head of his monster dick nudged my entrance teasingly, making me whimper and grind against him.

"Don't start what you won't finish," he growled. "Your moans are turning me on."

I pressed myself harder against his cock again, and gosh, it felt so good. His cock rubbed at my entrance with every step he took.

The moment we stepped into the bathroom, he turned the hot water on full blast. Steam quickly filled the room as he pressed me against the cold tiles, the contrast making me gasp. Without a word, he dropped to his knees and buried his face between my legs.

"I need to taste that release of yours again," he whispered, using his tongue to open up my entrance. "You taste like my cum," he groaned, his tongue diving deeper into my creampied pussy. He licked and sucked me greedily, cleaning out every drop of his load while his thick fingers rubbed my swollen clit in firm circles. I came hard on his face within seconds, my walls clenching as I squirted down his chin and chest, screaming his name.

"Why did you come without my permission, Emma?"

I nearly gasped. My name sounded so good on his lips.

"I love how my name sounds on your lips," I said, sliding my fingers into my pussy so they dripped with cum, then bringing them to my mouth seductively. "I want you to call me again. Just once, please."

"Fuck... She wants me to call her name," he said to himself. "I won't call your name now. I'll call it after I fuck you really bad, till you're terribly wrecked and whimpering at my command."

I chuckled and stretched out my leg to grab his cock.

"Or don't you like that, Emma?" He smiled, crawling forward to kiss me on the lips.

"I fucking love it." I kissed him harder.

"I'll make you call my name while your pussy squirts all over my face."

"Say no more," I said, placing a finger over his lips and trailing it down to his chest. "Make me feel that way again."

He stood up, his huge monster cock going fully hard again, and lifted one of my legs, hooking it over his hip. He rubbed the fat, veiny head up and down my dripping slit, teasing my entrance before pushing himself into me.

"Oh my god, Jake!" I screamed, my nails digging into his shoulders. He was so deep I felt him in my stomach. The hot water cascaded over us as he started pounding me against the wall. Every deep, powerful stroke made my tits bounce wildly and my back arch against the tiles. His heavy balls slapped against my ass while his thick cock rearranged my insides.

"Take this cock, little sis," he grunted, one hand wrapping around my throat lightly and squeezing just enough to make me dizzy with pleasure, the other slapping my ass hard. "This tight little pussy is mine now. Say it."

"It's yours," I moaned, my voice breaking as he hit that perfect spot over and over. "My pussy belongs to you, Jake."

"I need to hear that louder," he yelled, groaning as he increased his pace.

"It's all yours. My pussy... It belongs to you now," I cried.

I felt my orgasm building, and before I could tell him, my pussy exploded even harder this time. My walls milked his thick shaft as I squirted around him, my juices mixing with the shower water.

He pulled out and lowered his head to my pussy to lick up my remaining release.

"Bad thing you didn't let me taste your release this time," he grunted, sucking my pussy like he was trying to dry me up.

"Mmmph... oh fuck, Jake... your tongue is so deep..." I moaned, using my fingers to rub my pussy lips faster.

He pushed my hand away and took over completely. His thick fingers spread my swollen lips wide open while his mouth latched onto my clit, sucking hard. Two of his fingers plunged deep inside me, curling and pumping fast, working my G-spot while his tongue flicked and sucked my clit without mercy. The sloppy sounds of him eating my pussy filled the shower, louder than the running water.

"Fuuuuck... Jake... yes, right there..." I cried, my hips bucking against his face. He sucked harder, fingers fucking me faster and stretching me open. My legs started shaking as another orgasm built fast.

He pulled back just enough to growl, "Cum on my tongue again. I want to drink every drop."

I exploded. My pussy clenched hard around his fingers as I squirted hard on his face, my juices spraying his chin and chest. He kept sucking and fingering me through it, drawing out every pulse until I was whimpering and my legs could barely hold me.

He stood up, water running down his body, and kissed me deeply, letting me taste myself on his tongue. His cock pressed against my stomach, ready for more.

But he wasn't done eating me yet.

He dropped back down, spread my legs wider, and went back to work, tongue deep in my pussy, fingers rubbing my clit and pumping inside me at the same time. I was about to come again when he noticed and ordered me to stop.

"You're not coming now. Hold it. We're coming on each other's faces at the same time."

His hands worked my pussy while mine worked his cock. He pumped me faster, pushing me closer to the edge.

He wanted us to come together, and I was ready.

I worked his cock faster, using one finger to tease his opening while the other cupped his balls. Thick precum dripped out, spreading all over my fingers.

I kept going, switching fingers when necessary and licking off every drop of precum he gave me. I was about to change our positions when I heard him groan that he was coming. We both dropped to our knees, positioning ourselves at an angle so we could receive each other's release.

"Ready?" he asked, rubbing the tip of his cock.

"Let's do it. It's killing me."

He winked at me, and instantly our releases hit each other's mouths. His was thick and warm, tasting strangely similar to my own. My pussy clenched as we emptied ourselves.

We didn't collapse like it happens in movies. Just pure silence followed, as if neither of us wanted to talk.

"Are you okay, Emma?" Jake finally spoke.

"We need to freshen up and get some sleep. It's pretty late right now," he said, falling back into silence.

I crawled to him, kissed him on the lips, then headed back under the water.

That was my little act of appreciation for moments like this.

Jake's POV

Last night was hot. Like, fuck. If someone had told me my stepsister would taste better than anyone I'd ever fucked, I would've called it a lie, until yesterday.

I lay flat on my back in my bedroom, staring up at the ceiling fan spinning lazily, but my mind had completely drifted to everything that happened between my stepsister and me last night.

I wanted to push her out of my head and convince myself it was just a one-time experience I might never get again, but I couldn't.

My room was beginning to smell like her, as if she had been in here with me all night. It smelled like a mixture of my thick cum and her sweet, sticky squirt.

Before yesterday, I honestly thought she was just that naive, quiet girl who cared little about my existence. We barely talked. We had almost zero interactions outside of a mumbled "good morning" or passing each other in the hallway. I figured she saw me as the annoying older stepbrother who was just occupying space in the house after college. But fuck, I was completely wrong.

Yesterday changed everything. I discovered she had something inside her, a raw, untamable hunger, that was going to keep drawing me back to her like the fucking addict I was becoming. I couldn't stop thinking about her. I kept picturing the look on her face when I dipped my hand into her pussy for the very first time on that couch. She was so incredibly wet, her tight little entrance dripping before I even touched her clit. And she came multiple times, screaming, shaking, and soaking my fingers, all because of me.

Just thinking about the way her tight pussy stretched around me as I moved in and out of her made my sweatpants feel suffocating.

I reached down, gripping myself through my shorts. My dick was already stubbornly hard, a thick, rigid pillar pressing uncomfortably against my stomach. I pulled the waistband down, letting my ten-inch cock spring free into the cool air of my bedroom. It was already fully erect, veiny, and throbbing with a violent pulse. The heavy head was dark purple, precum leaking from its tip.

I got back on the bed, wrapping my hand around my cock. I needed to ease this tension right away. I began to stroke myself slowly, my thumb sliding over the sensitive skin right beneath the head and smearing the precum down the length.

"Emma," I growled out loud into the empty room. Her name rolled off my tongue too seductively.

The moment my eyes closed, the memories came flooding back. I pictured her bent over the couch, those tiny sleep shorts bunched up around her waist, revealing the full, smooth cheeks of her ass. I remembered the exact sound of her voice when she broke down, crying and begging me to stretch her open with my huge cock. The stretch had been so tight, so goddamn perfect, that I felt like I was tearing her apart, in the best way possible. Her inner walls gripped my shaft, milking me from the very first deep thrust.

I increased my pace, tightening my grip on my cock. It felt so good, but it wasn't enough. I wanted her mouth. I wanted to feel her wet, tight lips stretching wide to accommodate my thickness, just like she did when she was on her knees on the living room floor, taking the fat head of my dick into her throat until tears pricked her eyes. She had been such a good, obedient little cocksucker, swallowing my precum and cleaning me up like a pro.

"Fuck, Emma..." I groaned, my hips bucking off the mattress as my hand pumped faster.

My mind shifted to the shower. I could almost feel the hot water cascading over my shoulders, mixing with the slick, sticky juices covering her pussy. I imagined myself dropping to my knees on those cold bathroom tiles and burying my face between her thighs. She had tasted so fucking sweet, even with the heavy taste of my own cum mixed in. I remembered how desperately her hips bucked against my mouth when my tongue dove deep inside her creampied entrance. She had squirted right down my chin and chest, her entire body convulsing as she yelled my name over and over.

The memory was so intense, so vivid, that my balls drew up tight. I slid my left hand down, cupping my heavy sack, squeezing and rolling my testicles while my right hand furiously worked my cock. I took one finger, slick with my own precum, and pressed it against my opening, tracing the tip just like she had done to me in the shower right before we came on each other's faces.

The overload of the fantasy pushed me right over the edge.

"Yeah, take it, Emma... suck it clean, you little whore," I grunted out loud, my voice deep and ragged.

I fell into a brutal pace, my hand slapping against my lower belly. My cock locked up, my toes curling as a massive wave of pleasure exploded through me. I groaned into the quiet bedroom, my hand still pumping violently as my cock erupted. Load after load of thick, hot, white cum shot out of me, splattering heavily across my chest and stomach.

I remained on the bed panting heavily, my chest heaving as the aftershocks rippled through my cock. But the satisfaction didn't last more than a few seconds. Usually after a release like that, a guy cools down. The urge fades. But not today. Not with Emma sleeping just a few doors away.

My dick didn't even go soft. It stayed stubbornly hard, throbbing heavily against my sticky abdomen. The image of her tits bouncing wildly in the wet shower flashed in my mind again. I thought about her long, slender fingers rubbing her own swollen pussy lips while I sucked her clit.

"Fucking hell," I muttered, my hand gripping my shaft again without thinking.

I didn't even bother to wipe the fresh cum off my chest. I just started stroking myself through the mess, using my own release as lubricant. It felt entirely different this time, sensitized, dirty, and incredibly dominant. I closed my eyes and pictured the next thirteen days we had left alone in this house. Thirteen days of complete, unrestricted access to her body. I'd fuck her on the kitchen counter. I'd bend her over the dining table. I'd make her wake me up every single morning with her tight mouth wrapped around my cock.

The thoughts worked me right back into the mood. My cock returned to full, monstrous hardness, veiny and rigid, practically begging for another release. I pumped myself harder, my thumb working the sensitive head, forcing the arousal to build at a dangerous speed. I imagined burying my cock so deep in her pussy that she wouldn't be able to form a proper sentence, just broken, breathless whimpers of my name.

Within minutes, my balls tightened again, and I felt that heavy, aching pressure building in my groin. I let out a low growl, my hand moving in a furious motion up and down my ten-inch cock.

"Emma... fuck... you're mine," I hissed, my hips jerking violently as I came hard for the second time. Another heavy release of thick cum pumped out of me, joining the mess already drying on my stomach and leaving me completely spent and covered in my own release.

I stayed completely still for a few minutes, my breathing slowly returning to normal. The house was dead silent. I finally sat up, grabbing a clean towel from the side of the bed to roughly wipe the sticky white fluid off my chest and stomach. I pulled my sweatpants back up over my hips, but even after two explosive releases, the dull, heavy ache in my groin wouldn't disappear. My cock was still thick, resting heavily against my thigh, refusing to go completely soft.

I realized I couldn't stay locked up in my bedroom any longer. The walls felt like they were closing in on me. I needed to see her. I needed to look at her face in the morning light to confirm that yesterday hadn't been some kind of wild, feverish dream.

I quietly opened my bedroom door and stepped into the hallway. I took silent steps as I made my way downstairs toward the kitchen, expecting to find her making coffee.

When I got to the kitchen, I froze.

It was her.

Emma.

She didn't seem to notice my presence at all. She was completely turned away from me, her back bathed in the warm morning sunlight filtering through the glass.

She had on a pair of tiny, thin white cotton panties that sat low on her hips, the fabric stretched tight across the smooth, round curve of her ass. But it was her upper body that made my heart slam violently against my ribs.

She had no bra on. Nothing at all.

Her back was completely bare, her slender shoulders and the delicate curve of her waist entirely exposed. From where I stood, I could see the soft, round swell of the side of her bare breast, the heavy weight of it hanging beautifully as she lifted a hand to brush a stray strand of hair behind her ear.

I stood completely transfixed in the doorway, my muscles locking up as my eyes dragged slowly down the length of her exposed skin.

My sweatpants instantly grew tight again as my cock went back to full, throbbing hardness, threatening to rip right through the fabric at the sight of her.

I couldn't move. I just stood there, watching her, my hand unconsciously reaching down to grip my cock through my sweatpants as the memories of last night flooded back even stronger.