**Burning Desire**

Ever since I turned eighteen, I couldn’t stop staring at my sister Samantha. Two years older than me, she had curves that made my mouth water every time she walked around the house in those tiny shorts or tight tank tops. And fuck, did she know it. The way she’d bend over in front of me at the kitchen counter, the way she’d stretch her arms up to grab something from the top shelf, letting her shirt ride up just enough to see the bottom of her perfect ass cheeks. It drove me insane.

Tonight, the house was empty except for us. Mom and Dad were out for the weekend, and Samantha had spent the afternoon teasing me in nothing but a thin white T-shirt and pink panties, her nipples pressing against the fabric every time she turned toward me. I was rock hard by the time night fell, my cock straining against my jeans.

I found her in the bathroom, the door slightly ajar. Steam curled out from the shower, and I could hear the water running. My pulse spiked. Fuck it. I pushed the door open slowly, my breath catching when I saw her silhouette through the fogged glass—her full tits, the curve of her waist, and that ass I’d been dreaming about for months.

She turned, startled, but when she saw it was me, she didn’t scream. Instead, she smirked, sliding the shower door open just enough for me to see her glistening wet body. “Like what you see, little brother?”

I didn’t answer. I just stepped inside, still fully clothed, and pulled her against me, crashing my lips onto hers. She moaned into my mouth, her tongue tangling with mine as my hands groped her tits, squeezing hard. “Fuck, you’ve been teasing me all day,” I growled, pinching her nipples.

“Because I wanted you to snap,” she panted, grinding her pussy against the bulge in my pants. “I wanted you to break and fuck me like you’ve been dreaming about.”

That was all the permission I needed. I stripped fast, my dick springing free, already leaking pre-cum. Samantha dropped to her knees, wasting no time wrapping her lips around me, sucking hard as her tongue swirled around the tip. “Fuck, your mouth feels so good,” I groaned, gripping her wet hair as she bobbed up and down, her throat tightening around me.

But I wanted more. I pulled her up, spinning her around to face the shower wall. “Bend over,” I ordered. She obeyed instantly, pressing her palms against the tile and arching her back, her round ass on full display. I ran my hands over her cheeks, spreading them to reveal her tight little asshole and her glistening pussy.

I spat on my fingers before sliding two inside her pussy, fucking her fast and deep. She whimpered, pushing back against me. “You like that?” I murmured, curling my fingers to hit her spot.

“Y-yes! Fuck, don’t stop!”

I smirked, pulling my fingers out and pressing one against her asshole. She tensed for a second before relaxing, letting me push inside. “Oh my god,” she gasped, her cunt clenching around nothing.

“You want my cock in your ass, Samantha?” I taunted, working my finger in and out.

“Please,” she begged.

I lined up my dick, pressing the head against her tight hole. “You sure?”

She arched back harder. “Fuck me, bro. I need it.”

That was it. I pushed in slow, groaning at how fucking tight she was. Her ass gripped me like a vice, and she let out a high-pitched whine as I bottomed out. “You’re so fucking tight,” I growled, pulling back before slamming into her again.

“Oh fuck! Oh fuck!” she screamed, her fingers scrambling against the wet tiles as I pounded her ass relentlessly. The sound of our skin slapping together echoed in the shower, mixed with her moans and my ragged breathing.

Then I felt it—another urge. I reached around, gripping her waist. “Piss for me,” I demanded, tightening my grip.

“W-what?”

“Do it. Let go.”

She hesitated for half a second before I felt the warmth spread between her legs, golden streams mixing with the water running down her thighs. The sight made me even harder, and I fucked her faster, my balls slapping against her soaked skin.

“You’re such a filthy slut,” I hissed, pulling her hair back to expose her neck.

“Only for you,” she gasped.

I couldn’t hold back anymore. My cock pulsed inside her ass, unloading thick ropes of cum deep inside her. She clenched around me, milking every last drop as I groaned, collapsing against her back.

We stayed like that for a moment, the water washing over us, our breathing heavy.

Then she turned her head, smirking. “Mom and Dad get back tomorrow.”

I grinned. “Better make tonight count.”