Big Sister and Me
Copyright© 2026 by Abe
Chapter 9
Erotica Sex Story: Chapter 9 - He was masturbating into her underwear night after night—rubbing himself against the soft lace of her favorite pink bra, spilling thick ropes of cum across the crotch of her pale-blue panties, then carefully folding them back into her drawer so she’d unknowingly wear his mark against her most intimate skin the next day. The secret thrill of seeing her walk around the house in those same stained pieces, hips swaying, ass cheeks shifting under shorts, kept him hard and aching for more.
Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa Consensual Romantic Fiction Incest Brother Sister Indian Male Indian Female Anal Sex Cream Pie Massage Masturbation Oral Sex Big Breasts Indian Erotica Slow
Monica Didi lay completely naked on the sex chair in front of me. Her round backside glistened in the room’s yellow light, and my hard penis throbbed right next to it. Her hands gripped the chair handles tightly, as if she knew what was coming next.
I slowly moved my waist forward. As my cock began to sink between her soft buttocks, Monica Didi clenched her teeth and exhaled deeply. Her stomach tightened and contracted, and her body rose slightly on the chair, as if every nerve ending was awakening under my touch.
But I didn’t stop. I pushed further, carefully feeling her tightness. As I entered, I felt my penis trapped between hot, tight walls. The space was so tight that my breathing became heavy. I slowly began to push, each stroke long and deep. A muffled moan escaped Monica Didi’s lips, half in pain, half in desire.
When my penis was fully inside, I held her waist and paused for a moment. Her cheeks were red, her eyes closed. I whispered, “Is it hurting?” She said in a slightly trembling voice, “Just slowly ... don’t stop.” Hearing her words, I moved again, this time in rhythm, slowly, but without holding back.
With each thrust, her body slid back and forth on the chair. The only sound in the room was our breathing and rubbing. I couldn’t contain myself. Every moment was driving Didi and me to madness.
She gripped the chair handle tightly. She exhaled slowly, as if she felt every movement deep inside. “ Monica didi ... are you okay?” I whispered.
She nodded slightly, keeping her eyes closed, and said, “Yes ... just slowly ... are you there?”
I lifted her waist slightly and pushed my cock all the way in again. This time her moan became louder. Her toes curled, and her head jerked back as if an electric current had coursed through her.
I slowly pulled out and went in again, each time a little deeper, a little faster. Monica didi’s breath was becoming labored, and soft cries escaped her lips with each thrust.
Her body was now fully adapting to my movements. Her hips automatically lifted, pulling me further inside. She said softly, “Yes ... just like that ... don’t stop...”
The room was filled with the sound of our bodies and Didi’s heavy breathing. I was now adding more hunger to each thrust, as if each moan from Didi was driving me even wilder.
And then, I felt Didi’s body suddenly tense up even more. Her backside began to contract around my penis, as if she wanted to trap me even deeper inside. She gripped the chair handle even tighter, a broken voice uttering, “Ohh ... don’t stop ... just ... just like that...”
His whole body trembled; my hands and ps moved faster and faster on their own. I was now lost in his every stroke, no stopping, no thinking, just a deepening madness between us.
I tightened my grip and continued to push slowly but steadily. Monica Didi was trembling with each movement, her lips half open, her breathing heavy. I was simply lost in the warmth and tightness of her body. The air in the room had grown heavy, tinged with the smell of our sweat.
I just kept going, unstopped, unhurried, just enough to let her feel every moment. And Didi kept panting softly, her back pushing back with each thrust of my hips, as if she wanted me to go deeper.
I leaned forward, gripping her waist tighter. My chest was almost touching her back. She murmured a little more ... just there...” I continued without a word, both of us lost in each other, drawn to the next moment.
I didn’t let my grip loosen. Holding her waist, I gave her next push, and Didi’s voice slipped through the air, “Yes ... yes ... right there ... right there...” Her back rose slightly, and I felt her pulling me in deeper.
I whispered with a light laugh,” Monica didi ... You won’t let me stop today.”
She said half-breathed, her voice shaking, “Shut up ... just ... keep doing it ... If I’m on top, I’ll go crazy...”
Hearing her words, my body heated up. I began to move my hips faster, each thrust more powerful and deeper than the last. Didi’s screams were no longer suppressed. Each time, they suddenly burst and scattered in the air. I could feel her every vibration, every tightening, every warmth on my penis.
In the midst of that crazy rhythm, I leaned forward and whispered into her ear, “Didi ... you are completely lost...”
He suppressed a shaky laugh and said, “You did this ... now the responsibility is yours ... don’t stop...”
I gave her a big push, and Didi’s entire body tensed in her hair. She gripped the handle so tightly that her knuckles turned white.
“Ooohh...! D...! stop ... not even for a moment...” she said in a trembling voice, her breath catching between words. I moved both my hands from her waist to her back, pressing against her sweat-warmed skin. I began to stroke slowly but deeply. Each thrust went all the way in and then almost all the way out.
Monica Didi’s breath came out in gasps. She tilted her head back and said, “You ... you’re ruining me...”
I replied in a slow, heavy voice, “Today Didi ... I am not going to leave you.”
Her waist began to move in sync with mine, her body opening with each movement, her sounds louder and more free-flowing.
“Deeper...” he said with a twisted groan.
I asked, “Is this enough...?”
She gasped, “No ... until you get tired ... until...”
I bucked my hips faster, each thrust resonating deep within. The friction inside her was warm, silky, yet clenching, pulling my cock in with each thrust. Didi trembled, her thighs making small thumps against the edges of the chair, her breath hot and mixing with the room’s air.
“Didi ... I am very close now...” I said in a deep, trembling voice.
She replied immediately, her voice trembling but clear, “Yes ... yes ... just ... leave ... inside me ... everything...”
I bent down further, planted both hands on her waist, and began thrusting with all my might. Each stroke pushed her body forward, her back arching slightly, then returning to me like a thousand tiny strokes. The chair creaked with each thrust, as if it too joined in the rhythm.
“Monica ... Didi ... I...” I was out of breath, the words were coming out halfway, and I was getting lost in the air.
“Yes! Yes! Now!” she practically screamed. In that instant, her whole body stiffened like stone beneath me, a jolt running from her thighs to her back, her fingers gripping the handle as if she were about to burst into it.
I, too, had only one moment left. I couldn’t stop myself. One last, long, deep push, then I relaxed and leaned on him.