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Rated: 18+ · Interactive · Fantasy · #1748034

Laura finds an iPhone app that allows her to change herself and others.

This choice: She grows more muscular, but not taller  •  Go Back...
Chapter #14

She grows much more muscular

    by: jarhead300099 Author IconMail Icon
A soft "oh..." escaped he luscious, rosy lips. The world seemed to shudder at the transformation that was about to transpire. Jason let Laura down and she landed with a floor-creaking thud. Thanks to her and Jason's prior meddling with the Alterations app, she stood a sexy 6'7" tall, with slut-shamming F-cup breasts, and a staggering 780 lbs of sheer muscle thanks to the extreme density she had given herself. But she was growing now. She just absorbed 5 gallons of divine cum, and she had BIG plans for herself.

She shuddered and the growth started at her core. Abs pushed out bigger and harder, turning from tennis balls of muscle into a tightly packed 10-pack, of hyper-defined bricks the size of softballs, all fighting for space on her chiseled midsection. The growth wave washed over the rest of her body from there.

"Oh god... oh GOD! Jason!! ...Ah!! This feels so... uh, so good!" Laura uttered, completely lost in lust and arousal.

Pushing down into her legs, her quads pushed out further and further apart until it was impossible for her to put her feet together. Her quads stood out over a foot over her still narrow knees and massive calves as hard as diamonds and over 40"-thick. Her feet remained as feminine as ever, and even seemed to enhance slightly as they appeared more pampered and naturally manicured. Bouncing back up, her ass, already giving her a dramatic hourglass-shape, expanded further. A sharp "ass shelf" formed as her expanding back shot out behind her almost at a 90° angle. Lush, plump, firm, and muscular all at once, her ass was a paradox of muscle, definition, and juicy plumpness.

Jason simply gawked in awe and attraction. His already rock-hard dick twitched towards her, eagerly wanting more. He NEEDED more. Needed HER.

Moving upward, her chest inflated and grew like a weed. Pushing outward several feet already, her pecs deepened. A groove a foot deep formed between her twitching chest. Each flex, a roiling mass of swnsual muscularity moving across her broad pecs, crashing into each other like a tsunami. Her breasts, already enormous, appeared even thicker as her pecs pushed them out. They retained their feminine roundness and perky perfection however; she had programmed them to do so.

"Fuck!" She shouted, and reached out to play with her nipples with one hand, and down to her crotch with the other. "Holy shit!" She screamed and already her own juices began to flow down the deep canyons of definition that formed along her massive quads.

She soon noticed that her arms were being pushed away from her as the growth pushed out into her biceps. Thicker and thicker they pumped out, relentlessly, mercilessly, pushing her hands away from her eager nipples. Her biceps expanded to watermelon size in a matter of minutes, at least 50-inches around, and harder than any imaginable substance known. Her forearms were an angry network of twisting sinew and veins, as thick as a log, before narrowing down to dainty, feminine hands. They too were naturally manicured and pretty like her feet with perfect nails, unbroken and hard as steel.

Jason couldn't resist and longer and began stroking his cock with both of his hands. Faster and faster, he jacked to the sight of his growing girlfriend. The growth he was the catalyst for. The growth they both wanted for her.

The growth slowed as it pushed her traps up higher and rounder, supporting her thick neck like a travel pillow. Her back expanded so wide, she wasn't sure she'd ever be able to use even double doors ever again. The two of them panted in arousal for several moments as Laura came off her growth high. She was shiny and reflective of sexual sweat, glowing divinely as a result.

"That... was... the best... feeling.... ever" she panted between sensual huffs of her heaving chest. She tried to take a step forward, but the floor boards snapped beneath her steps.

"Oops. I guess my density settings must still be in overload. Increasing my muscle volume must have also exponentially increases my muscle mass too" she muttered innocently, clearly still the nerdy (albeit extremely horny) girl deep down inside. She flexed a prodigious bicep the size of a watermelon, and a quiver vibrated beneath her from the sheer power she possessed.

"Holy fuck, Laura. Just how heavy and strong are you now?" Jason asked, still stroking his third leg of a dick.

"I have no earthly idea!" She announced through perfectly sexy lips, "but...."
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