Mr. NSA
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First try on FMG
🕑 Added 2025-09-12 11:17:10 +0000 UTCThe soft glow of the bedside lamp cast long shadows as you followed her into the bedroom. She had untied her tank top at the door, letting it fall to the floor, leaving her topless, clad only in a pair of snug, black athletic shorts that hugged her petite frame. At 55kg, she was slender but toned, with the kind of lithe strength that hinted at a dancer or gymnast.
"Ready for bed, love?" you asked, a fond smile playing on your lips as you watched her turn to face you.
Her eyes twinkled with a mischievous glint you hadn't seen before. "Not just yet. I have something... special to show you."
She stood in the middle of the room, taking a deep breath, her chest rising and falling. Then, with a subtle shift, a ripple seemed to pass under her skin. Your brow furrowed. Was she just flexing? But it felt different.
"What are you doing?" you asked, curiosity piqued.
A soft groan, almost a sigh of effort, escaped her lips. Her shoulders, previously delicate, began to round and broaden. Not just a flex, but a distinct expansion. Her deltoids swelled, pushing against the smooth skin, giving her a wider, more powerful silhouette. Her biceps and triceps, while still modest, started to firm and grow, the outlines becoming sharply defined.
"Just... letting loose a little," she breathed, a triumphant smile now spreading across her face as she flexed harder.
Your eyes widened. "Your arms! They're... getting bigger!"
It was happening quickly now. Her entire upper body seemed to be undergoing a rapid transformation. Her chest became more prominent, pectorals hardening and rounding, giving her a shield-like appearance. Her abs, which usually only hinted at definition, began to pop, forming a solid, carved six-pack that rippled under her taut skin. The black shorts, previously comfortable, started to stretch noticeably around her hips and thighs.
"This is..." you started, completely mesmerized, taking a step closer. "Is this a... trick of the light?"
She laughed, a sound that was now deeper, richer, resonating with a newfound power. "No trick, my love. Just... me."
Her lats, previously unseen, began to flare out from her back, creating an impressive V-taper that made her waist appear impossibly narrow in comparison to her broadening shoulders. Her traps, the muscles connecting neck to shoulder, rose like mountains, giving her a formidable, almost regal posture. The veins in her arms, once faint, now stood out like intricate blue rivers, tracing paths across her bulging biceps and forearms.
You watched, transfixed, as her legs began their own impressive growth. Her quads and hamstrings, already firm, ballooned in size. The fabric of her black shorts strained audibly, protesting against the sudden, massive expansion of her musculature. Her inner thighs thickened, and her calves, too, grew in dense, hard knots. She was easily 80kg now, perhaps more, a truly athletic, powerful woman, but she wasn't stopping.
A guttural grunt of effort escaped her as she pushed further. Her entire body seemed to engorge with muscle. Her deltoids became perfect, cannonball-like spheres, bursting from her shoulders. Her biceps peaked, enormous and hard, twinned with triceps that hung in dense, striated slabs. Her forearms were thick and corded, practically tree trunks. Her back became a landscape of incredible power: massive lats, thick spinal erectors running alongside her spine, a testament to raw, unadulterated strength.
The black shorts were now stretched to their absolute limit, the fabric pulled so taut you feared it might rip at any moment. Her quads were colossal, like the thighs of a draft horse, and her calves were dense, rounded boulders. Every muscle group was hyper-defined, bulging, and deeply etched. Her skin, pulled tight over the mountainous contours, gleamed with a faint sheen.
She took a final, deep, shuddering breath, her chest, now a formidable wall of muscle, rising high. She stood before you, towering slightly, no longer the petite 55kg girl, but a magnificent, hyper-muscular Amazonian, easily 125kg of pure, sculpted muscle. Her new form was breathtaking – imposing, powerful, yet incredibly beautiful.
You could only stare, mouth agape, your mind struggling to process the incredible sight before you, You managed to stammer, your voice a whisper of awe and disbelief. “You’re… you’re immense! You’re… absolutely incredible, Babe! How… how are you doing this?”
She laughed, a rich, powerful sound that filled the room. "Surprise," she whispered, her voice still a little breathless from the effort, but laced with a triumphant smile. "I can... manipulate my muscles. Grow them, shrink them, reshape them. This... this is what I can really do. Let’s just say… I’ve been holding out on you. What do you think? Is this… too much?” She flexed a massive bicep, the muscle rippling under his gaze, before tapping it playfully. “Or just enough?
Your mind struggled to process the incredible transformation. You had followed your girlfriend into the bedroom, expecting a quiet evening, and now she was a living, breathing goddess of power. Your gaze swept over her magnificent physique, from the colossal deltoids to the tree-trunk legs, a mix of shock, awe, and an undeniable surge of primal fascination coursing through you.
