Skip to content “Alex?” Mom knocked on my door. “Can I come in?”
“Sure,” I said, spinning my chair around. She slipped inside, wearing a knee-length summer dress. Her chestnut hair spilled over her shoulders. My mother was tall and pretty, a perfect oval shape with almond-shaped eyes. She had a subtle hourglass figure with plenty of curves you just wanted to squeeze, but at the moment, she looked upset, which weighed her down. She sat on the edge of the bed and sighed.
“What’s this about?” I asked.
“It’s about your little sister, Sofi,” she said. “Ever since her boobs started growing, she’s been so insecure about them. The attention, the stares … even her friends are getting jealous. It’s weighing her down.”
I let out a breath. I had noticed too. How could I not? Well-endowment ran in the family. Even making eye contact with my mother sometimes was a challenge with how heavy her boobs were, her dresses barely hiding her two sweet watermelons, but Sofi’s breasts were even fuller and rounder.
“I know,” I said.
“She cried last night,” Mom went on. “She told me she wants a reduction. I tried to tell her no, that she’s naturally gorgeous, but she just kept saying her boobs are dumb, that no one will ever want her for who she is.”
“She’s always been fun to be around,” I said.
Mom tilted her head, giving me a little smile. “I know. You two have something special. That’s why…” She leaned closer, baring more of her cleavage that she’d passed on to her daughter. “I was hoping you could spend some… intimate time with her. Show her she’s wanted. Tell her how beautiful she really is.”
I blinked. “Intimate time? What exactly are you saying?”
Her lips curved, and she crossed her legs. “You know what I mean. She doesn’t need empty words. She needs to feel it. And I think you’re the only one who can do that for her.”
I scratched the back of my neck. “Are you sure? What if she thinks it’s weird?”
Mom shook her head, her hair sliding across her shoulder. “No … you two are already close. She trusts you. She won’t think it’s strange.”
“How can you be so sure?”
Her eyes darkened, and her voice dropped to a whisper. “Because I went through the same thing at her age. And it was my older brother who … helped me see myself differently.”
I blinked. “Wow. I never knew that.”
She nodded slowly, lips parting just enough to keep me on edge. “Sometimes the only way to fix what’s broken inside is with something bold. I’ve got yoga class tonight, and Sofi will be home soon. Just … try. For her sake.”
“I will,” I said, though my voice was unsteady.
Mom rose, leaned down, and pressed her lips against my forehead. Her kiss left a damp warmth on my skin … and sent a sharp twitch straight to my cock.
*****
The sound of the front door closing pulled me out of my thoughts. Sofia was home. I stood and made my way downstairs, finding her slipping off her shoes by the foyer.
Even in her simple outfit, a snug top and denim shorts, she radiated youthful beauty. Her skin had that fresh glow of eighteen, her oval-shaped face was one hundred percent cute, and her long, chestnut hair tumbling over her shoulders like silk. Her curves drew the eye no matter what she wore, but it was her breasts that always stunned me. Those heavy, full DD-cup breasts strained against her top, round and high like something carved to perfection. I couldn’t help thinking they were a work of art, the kind you’d never get tired of admiring.
“Hey, Sofi,” I said.
“Hi, Alex,” she said with a smile, happy to see me.
“Come sit with me.”
She followed me into the living room, and we dropped onto the couch together.
“So,” I asked, turning toward her, “how was your day?”
Her lips curved into a smile. “Thanks for asking. It was … alright, I guess.” She toyed with a loose thread on her shorts, then glanced at me. “But I wanted to ask you something. Do you think you could lend me money for … surgery?”
“Surgery? What kind of surgery?” I already knew, but I just wanted her to be honest with me.
Her gaze dipped to her chest before she said it. “A reduction.”
The word hit me hard. I shook my head right away. “No. Absolutely not. Sofi, you’ve got the most beautiful boobs a girl could ever have.”
She sighed, sinking deeper into the cushions. “That’s the problem. Guys only stare at them. No one cares about me, about who I really am. I have a personality too.”
I leaned forward, wanting her to feel every word. “I know you do. You’re funny. You’re smart, you’re fun to be around. Trust me, there’s way more to you than just your body.”
A faint smile tugged at her lips. “Yeah … I know you think that.”
Sofi let out another sigh, then leaned into me, her arms sliding around my shoulders. I hugged her back, holding her close, feeling the warmth of her body pressed to mine.
“I love you for who you are,” I murmured against her hair. “And for the record, your breasts are gorgeous.”
She pulled back just enough to meet my eyes, her cheeks pinkening. “You say that… but you haven’t really seen them.”
I searched her face. “If you want to show me, you can. Only if you want.”
“I don’t mind showing them to you,” she said. “If you want to see them.”
“It wouldn’t hurt,” I said with a shrug.
Slowly, she tugged her top up and over her chest, revealing her large bra that kept those big boobs in check, but the cleavage was massive. Her breasts pressed together so tightly they created a canyon of soft flesh, deep and inviting, a cleavage that looked like it could swallow my face whole.
Then she reached behind her, unhooking the bra. They spilled free, round, heavy, and full. Even if gravity gave them a soft sag, they were easily the biggest breasts I’d ever seen. They spilled outward in perfect curves, each one tipped with a wide, rosy areola and firm nipples. The sag made them look more natural and womanly.
My jaw went slack. They were easily the biggest I had ever seen, and on her petite frame, they looked even more impressive.
She looked at me nervously. “So… what do you think? Am I a freak or?”
“You’re not a freak,” I said firmly after swallowing hard. “They’re beautiful. On you, they’re perfect. They’re the icing on the cake… but you, Sofi, you’re the cake.”
She chuckled, her lips curving as she shook her head. “You’re the funny one,” she said. “But thanks.” Her smile faded into something more vulnerable. “It’s just … I’m scared. If I ever had sex, they’d bounce all over the place. It would probably hurt.”
I brushed her arm gently. “That’s not how it works. It won’t hurt. I can show you, if you want.”
Her blush deepened, her wide eyes locked on mine. “You’d… be willing to do that for me?”
I nodded, taking Sofi’s hand in mine. “If you’re okay with that,” I told her tenderly. “I think it will help overcome your insecurities.”
“I think so too,” she said. “But if anyone finds out…”
“No one will,” I told her. “We’ll keep it in the family.”
She smiled. “Okay … Can we do it in my bedroom?”
“Of course, come on,” I whispered, leading her up the stairs to her bedroom.
Once inside, I closed the door behind us. The late afternoon sun filtered through her curtains, and she stood there, half-naked and vulnerable, her eyes wide with anticipation and just a hint of fear.
“This will be my first time,” she said nervously but also excitedly.
“I’ll be gentle,” I promised her, stepping closer. “I just want to show you how beautiful you really are.”
I leaned down, pressing my lips against hers. When Sofi parted her lips with a small sigh, I deepened it. My hands slid down to her waist, pulling her closer until her bare breasts pressed warm and heavy against my chest. They warmed me like a blanket.
“Can I touch you?” I asked, my voice rough with need.
She nodded, her breath quickening against my mouth.
I cupped her breasts, one in each hand, stunned by their sheer weight and softness. They spilled over my palms, her nipples hardening under my touch. Sofi gasped, the sound sending a jolt straight through me.
“God, Sofi,” I murmured, staring at her flushed chest. “They’re perfect. You’re perfect.”
I lowered my head and took one of her nipples into my mouth, circling it slowly with my tongue. Her moan filled the room, her fingers threading through my hair as if to keep me there, pressed against her. I worshipped her breasts with my mouth and hands, showing her with every touch how desirable she was.
When I finally pulled back, her cheeks were rosy. “You really seem to like them.”
“Duh,” I said, making both of us laugh. “Let me undress.”
I tugged my shirt over my head, letting it drop. Her gaze stayed on me as I stripped down, jeans hitting the floor and then my boxers. Finally, my cock sprang free, thick and hard, her eyes widening slightly at the sight.
“That looks like a big penis,” she said with a chuckle. “And it looks really hard.”
“It’s because I find you attractive,” I told her. “Lie back,” I said gently, helping her slide out of her shorts and panties.
She stretched out across the bed, her hair spilling across the pillow. From this angle, her breasts looked even more magnificent, spreading slightly to either side yet still full, rising and falling with every excited breath. The sight hardened my cock to steel.
“You’re the most beautiful girl I’ve ever seen,” I said honestly as I positioned myself between her thighs.
She parted her legs for me, shy but willing, revealing the glisten of her arousal. I ran a finger slowly along her symmetric, narrow, pink slit, and found her wet.
“Uhm, I’ve never done this before,” she said, reminding she was still a virgin.
“It will be alright. I promise to be gentle.”
“Okay,” she said, spreading her legs a bit wider.
“Are you ready?” I asked, pressing the head of my cock against her soaked lips.
She bit her lip, eyes wide and trembling. “Yes … please. Show me.”
I pushed forward slowly, enjoying the way her tight channel stretched around me inch by inch. She was unbelievably snug, her inner walls gripping me hard, her body trying to take me in. My eyes locked on her face, watching every flicker of sensation cross her features as I sank deeper into her.
Her mouth opened in a moan as I filled her, inch by inch, until I was buried deep inside. She was so tight and warm, it nearly made me lose control right there.
“Breathe, Sofi,” I whispered, brushing her hair back from her damp forehead. “You’re doing amazing.”
She clutched the sheets, her chest rising and falling, those huge breasts shifting with every little movement. I couldn’t stop staring.
“God, you’re beautiful,” I murmured. “Look at these.” My hands slid up to cup them again, kneading gently. Her nipples were stiff against my palms. “They’re perfect. Hold them for me.”
“Like… this?” She lifted her breasts with both hands, pressing them together so they formed a deep, irresistible cleavage. It looked like an endless, plush valley that I wanted to bury my face in and never leave.
My cock throbbed inside her at the sight. “Yeah, just like that.”
I began to fuck her, slow and tender at first, letting her pussy adjust, enjoying the way her pussy clung to me. She moaned, low and breathy, her fingers digging into the soft flesh of her breasts as she held them up for me. The motion made them bounce with every thrust, her cleavage tightening, framing her chest in a way that nearly broke me.
“It doesn’t hurt?” I asked between breaths.
She shook her head quickly, her lips parting in a gasp. “N-no… it feels… good. So good.”
I leaned down to kiss her, my hips rolling into hers. Her breasts pressed up against me, hot and heavy, squeezed between us as she held them tighter.
“See?” I murmured against her lips. “Nothing to be afraid of. You’re perfect like this.”
Her moans grew louder, her legs wrapping around my waist, pulling me deeper. I thrust steadily, guiding her through every motion, never taking my eyes off her face, or the way those massive tits framed her beauty like the most decadent crown I’d ever seen.
Her moans grew sharper with every thrust, the sound filling the room. Sweat slicked our skin, the bed creaking beneath us as I fucked her steady and deep. She squeezed her tits together, nipples hard between her fingers, and the sight nearly made me lose it.
“Alex… oh god, Alex—” Her voice cracked, high and desperate. Her pussy clamped down on me so hard it almost hurt, her body tightening as if she was trying to hold me inside forever.
“That’s it,” I groaned, grinding into her.
Her whole body went rigid, then trembled violently beneath me. Her back arched off the mattress, shoving her big tits against my chest, her hands slipping as they bounced free. They jiggled wildly with each spasm of her body, heavy flesh slapping softly against her ribs as she cried out.
“Ahh—f-fuck!” she said, her pussy milking my cock in desperate waves as she climaxed. Hot wetness gushed around me, soaking my thighs and the sheets beneath us.
I held her tight, pumping into her through the storm of her orgasm, watching her face twist in raw pleasure. Her cheeks flushed deep pink, her lips parted, and her eyes fluttered shut as if she was lost in it completely.
The grip of her pussy was too much as I fucked her. I buried myself to the hilt, grunting as I unloaded inside her, thick ropes of cum shooting inside her vagina. She gasped when she felt it, her pussy still twitching around me as if sucking every drop.
I stayed inside her, both of us shaking, her tits pressed warm and slick against my chest. They rose and fell with her ragged breathing, her nipples brushing my skin with every tremor.
Finally, she collapsed against the pillows, sweat-damp hair fanned around her. She looked wrecked and perfect, her breasts spread heavy across her chest, still heaving with each breath.
“Wow,” she whispered, her voice weak but awed. “I didn’t know… it would feel like that.”
I kissed her forehead, still buried deep inside her. “That’s what I meant, Sofi. Nothing to be afraid of. You were amazing.”
Her lips curved in a dazed smile, her eyes half-closed. “You made me feel… beautiful.”
I pulled my cock out and stroked her chin. “So, do you feel better now?”
She nodded.
“Do you promise me not to do breast reduction surgery?”
“I promise,” she said with a smile, and wrapped her arms around me, mashing her wonderful tits against my chest. “Thank you for being a wonderful brother.”
“You’re welcome, sis.”
The end.
If you’d like to support my writing, you can purchase full-length incest novels with deeper storytelling and stronger character development here: brother sister incest eBooks.
Or if you want to read similar stories, click here: brother sister incest stories