**Title: Breaking the Rules**

It was one of those lazy summer afternoons where the air was thick with heat, and neither of us had anything to do. My younger sister, Emma, was sprawled on the couch in just a thin tank top and tiny shorts that barely covered her ass. She had always been cute—petite, with big, innocent eyes and soft pink lips—but lately, I’d caught myself staring at her in ways that I shouldn’t.

She turned her head toward me, noticing the way my eyes lingered on her bare thighs. “What?” she murmured, pushing a strand of hair behind her ear.

I should’ve looked away, but I didn’t. “Nothing,” I lied.

A slow smirk curled her lips, and she stretched, arching her back just enough that her tank top rode up, exposing the smooth skin of her stomach. “You’ve been staring at me all day,” she said, her voice teasing. “Is there something you wanna say?”

My cock was already hard, pressing uncomfortably against my jeans. I knew this was wrong, but the way she was looking at me—shy, but curious, like she wanted me to make the first move—was too much to resist.

I moved closer, sitting beside her. “Maybe I just like looking at you.”

She bit her lip, her cheeks flushing pink. “That’s… kind of weird, you know?”

“Yeah,” I admitted. “But you’re not stopping me.”

Her breath hitched when I reached out, tracing my fingers along her thigh, feeling the warmth of her skin. She didn’t pull away. Instead, she spread her legs just a little, giving me room.

My heart pounded as I slid my hand higher, brushing the edge of her shorts. “Emma,” I whispered, “tell me to stop.”

She didn’t. Instead, she whimpered, tilting her hips up.

That was all the encouragement I needed. I pushed my fingers past the fabric of her shorts, groaning when I felt how wet she already was. Her panties were soaked, clinging to her pussy as I rubbed her through the thin material.

“Oh fuck,” she gasped, squirming under my touch.

I hooked my fingers into her panties and pulled them aside, finally touching her bare cunt. She was so soft, so slick, and when I pushed a finger inside her, she moaned, her back arching off the couch.

“More,” she begged, her legs spreading wider.

I added a second finger, thrusting them deep as my thumb circled her clit. She was tight, her walls clenching around my fingers, and the sounds she made—those little whimpers and gasps—drove me fucking wild.

I leaned down, kissing her neck as I fingered her harder. “You’re so fucking wet for me,” I growled. “You like this, don’t you? You like your brother touching your pussy?”

She nodded frantically, her hands gripping my shoulders. “Yes, yes, please don’t stop—”

I didn’t. I worked her clit faster, feeling her body tense up. Her breath came in short, desperate pants, and then with a sharp cry, she came, shaking against me as her pussy squeezed my fingers.

I didn’t give her time to recover. I pulled my hand free and shoved my jeans down, freeing my cock. It was thick and aching, precum already dripping from the tip.

Emma’s eyes widened when she saw it. “Oh my god,” she breathed.

“You want it?” I asked, stroking myself slowly.

She hesitated for only a second before nodding, licking her lips. “Yes.”

I grabbed her hips and dragged her closer, positioning myself at her entrance. The head of my cock pressed against her slick folds, and then, with one slow thrust, I pushed inside.

She was so tight, so warm, and the way she moaned—high and needy—made my entire body burn. I started slow, letting her adjust, but soon, I couldn’t hold back. I fucked her harder, gripping her thighs as I drove deep.

“Fuck, Emma, your pussy feels amazing,” I groaned, watching my cock disappear inside her.

She whimpered, clawing at the couch. “Harder, please—”

I gave her what she wanted, slamming into her, my hips snapping forward with each thrust. The sounds of our skin slapping together filled the room, mixed with her moans and my ragged breaths.

I could feel her tightening around me again, her body trembling. “I’m gonna cum,” she whined.

“Do it,” I growled. “Cum on your brother’s cock.”

Her back arched as she came with a scream, her pussy pulsing around me. The sensation was too much—I buried myself deep and came hard, filling her up as she shuddered beneath me.

We stayed like that for a moment, both of us panting, before I finally pulled out. She looked up at me, her eyes hazy and satisfied.

“We shouldn’t do that again,” she whispered.

But the way she said it, I knew we would.