I had just gotten home from work when I heard the shower running upstairs. My little sister Emily was back from college for the summer, and the house felt different with her around again. She was twenty-two now, all grown up with those long legs and that tight ass she always showed off in tiny shorts. I tried not to think about it, but lately it was impossible.
I climbed the stairs quiet, the sound of water hitting tile getting louder. The bathroom door was cracked open a couple inches like she wanted someone to look. I pushed it wider and there she was, naked behind the glass, water running down her perky tits and over her shaved pussy. She saw me and didn't scream. She just smiled and opened the door.
"Been waiting for you to come look," she said, voice low and dirty. "Come here and fuck me like you want to."
I stripped fast, cock already rock hard. She stepped out wet and pressed against me, grabbing my dick and stroking it rough. "I want you to cum in my pussy tonight. Fill it up. Don't pull out."
We didn't make it to the bedroom. I bent her over the sink right there, spread her ass cheeks and slammed into her wet cunt in one thrust. She moaned loud, pushing back on me. "Harder, big brother. Pound that sister pussy."
I gripped her hips and fucked her deep, balls slapping against her.
Her tight walls squeezed me every time I bottomed out. Water still dripped from her skin as I reached around and rubbed her clit fast. She came quick, shaking and cursing, but I kept going, driving into her harder.
"Turn around," I growled. I lifted her onto the counter, legs spread wide, and shoved back inside. Her tits bounced with every thrust. She pulled me down to suck on her nipples while I railed her. "Tell me you want my cum," I said.
"Fill my pussy," she begged. "Cum deep in your sister's cunt. I want to feel it leaking out all night."
I slammed in faster, skin slapping loud in the steamy room. Her pussy was soaked, gripping me like it was made for my cock. I felt my balls tighten and buried myself to the hilt, shooting thick ropes of cum straight into her. She held me there, milking every drop with her inner muscles.
We weren't done. She slid off the counter, cum already starting to drip down her thigh, and dropped to her knees. She sucked me clean, tongue licking up the mess, then stood and bent over the tub edge. "Again. Fuck another load into me."
I slid back into her cum-filled pussy, the mess making it even slicker. I pounded her from behind, watching my cock disappear into her while white cream coated my shaft. She reached back and spread herself wider. "Deeper. Breed that sister hole."
I came again, pumping more cum inside until it overflowed and ran down her legs. We stayed like that, breathing hard, my dick twitching in her overflowing cunt.
Later in her bed we kept going, slow and nasty at first then rough again. She rode me, grinding her clit on my base while I sucked her tits, telling me how she touched herself thinking about this all semester. I flipped her onto her stomach and fucked her prone, pinning her down as I unloaded a third time deep in her pussy.
By morning she was leaking my cum onto the sheets, smiling as she spread her legs so I could see. "We’re doing this every day I’m home," she said. "Cum in my pussy whenever you want."
I rolled on top of her again, already hard, and pushed back inside the mess we made. She wrapped her legs around me and moaned for more.
