Oh God, the back pains

You force yourself to remain motionless against the restraints, your newly feminine chest rising and falling with each breath. The injection sites throb with a cold burning sensation that radiates outward in concentric circles from each of the eight puncture wounds.

Miss Velvet settles into her chair beside the table, crossing one leather-clad leg over the other. She checks something on her tablet, then sets it aside to watch you with unwavering attention.

"The serum is already dispersing through your mammary tissue," she observes. "You should start feeling the first signs of growth in about fifteen minutes. It begins as a tingling sensation, then progresses to pressure as the tissue expands."

The minutes crawl past. You try to focus on anything other than what's about to happen—the hum of ventilation, the distant throb of bass from the club above, the ache still present in your widened hips. But your awareness keeps returning to your chest, hyperalert to any change.

At 1:03pm, you feel it. A strange tingling warmth begins spreading outward from your nipples, as though something beneath the skin has suddenly come alive. Your breath catches.

"There it is," Miss Velvet says, leaning forward. "I can see it in your face. The growth is beginning."

The tingling intensifies rapidly, becoming an uncomfortable pressure that makes your chest feel swollen and tight. You can't see anything yet, but you can feel your tissue beginning to push outward, expanding in a way that's both alien and undeniable.

"This is the fastest phase," Miss Velvet explains, her voice taking on that clinical quality she uses when describing the transformation process. "For the next two hours, you'll experience the most dramatic growth. Your chest will expand continuously. The skin will stretch to accommodate the new tissue, which creates a burning, itching sensation that most subjects find extremely distressing."

By 1:15pm, you can actually see the beginning of the change. Your previously flat chest has developed subtle swells around each nipple—small mounds that weren't there twenty minutes ago. The pressure has become genuinely uncomfortable, a sensation of being inflated from within.

"Beautiful," Miss Velvet breathes. She reaches out and traces one gloved finger around the edge of your developing breast. "You're responding perfectly to the serum. I'd estimate you're already at an A-cup. Another hour and you'll have proper breasts."

The growth continues its relentless progression. Each breath feels strange now, your chest moving differently as new weight begins to accumulate.

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The first sensation arrives exactly nineteen minutes after the injections, just as Miss Velvet predicted. A strange warmth spreads beneath your skin where the needles penetrated, like heated honey flowing through your chest tissue. You inhale sharply, and the sound emerges in that breathy feminine voice you still haven't adjusted to.

"There it is," Miss Velvet says, leaning closer. "The serum's activating. Tell me what you're feeling."

"It's warm," you whisper. "Like... like something's moving under my skin."

"That's your mammary tissue beginning to develop," she explains, her gloved fingers hovering just above your chest. "Fat cells multiplying, milk ducts forming, glandular tissue expanding. Your body's building breasts from nothing."

The warmth intensifies over the next ten minutes, concentrating in eight distinct points corresponding to the injection sites. Then the growth begins in earnest. You watch, horrified and fascinated, as your completely flat chest begins to swell. It's subtle at first—a slight rounding, barely visible. But the progression is relentless.

By 1:15pm, you have definite mounds pushing up from your chest. Small breasts, perhaps A-cup, but unmistakably female. Your nipples have darkened and enlarged, becoming more prominent as the tissue beneath them expands outward.

"Beautiful," Miss Velvet breathes. "Absolutely beautiful. Look at yourself, Candy. Look at those pretty little tits growing."

The stretching sensation becomes uncomfortable as your skin struggles to accommodate the expanding tissue. It's not quite pain—more like an intense, inescapable pressure from within. Your chest feels tight, full, increasingly heavy.

Miss Velvet produces a small camera and begins taking photographs from various angles. "For the before-and-after documentation," she explains. "Trust me, you'll want to see the progression later."

By 1:45pm, you're solidly into B-cup territory. Your breasts have distinct weight now, pulling slightly against your chest with each breath. The areolas have expanded to match the larger size, pink and sensitive.

"We're barely a quarter of the way through," Miss Velvet observes, checking her tablet. "Peak growth phase hits around 4pm. That's when things get really dramatic." She traces one gloved finger around the swell of your developing right breast, not quite touching. "You're going to be so fucking stacked, sweetness. Just wait."

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Your eyes remain fixed on your chest as the transformation continues its inexorable progression. The breasts are impossible to ignore now—they've reached what must be a C-cup, full and heavy, creating distinct curves that cast shadows in the chamber's clinical lighting. Each breath lifts them slightly, a movement that feels alien and deeply wrong.

Miss Velvet circles the table slowly, her heels clicking against the polished floor. She's removed her gloves at some point, and her bare fingers trail along the restraints binding your wrist.

"How does it feel?" she asks. "Having tits for the first time?"

You don't answer immediately. The sensation is overwhelming—not just the physical weight pulling at your chest, but the psychological impact of watching your body develop curves that shouldn't exist. The stretching has become more intense now, your skin taut as it struggles to accommodate the expanding tissue.

"Heavy," you finally whisper.

"They're only going to get heavier," she replies, leaning over you to examine your development from above. Her red hair falls forward, framing her face. "By six o'clock tonight, you're going to have the kind of tits that make walking difficult. The kind that bounce with every step. Dancing is going to be an education."

She straightens and walks to her tablet, checking readings. "Growth rate is accelerating. You're responding to the serum exceptionally well—better than almost anyone I've transformed before. It's like your body wants to be female."

By 2:30pm, you've clearly reached D-cup territory. Your breasts are prominently rounded now, jutting upward despite gravity, the nipples pointing toward the ceiling. The areolas have darkened to a deeper pink, contrasting sharply with your pale skin.

Miss Velvet takes more photographs, positioning herself at different angles. "Magnificent," she murmurs. "Just absolutely fucking magnificent. Another three hours and you'll be perfect."

The stretching sensation intensifies as growth continues. You can actually see the expansion happening now if you watch carefully—subtle increases in volume every few minutes, your chest swelling outward like time-lapse footage of blooming flowers.

"We're approaching the peak growth phase," Miss Velvet announces around 3:15pm. "This is where it gets really dramatic. Most of your final size will develop in the next ninety minutes."

She sits down beside the table, settling in to watch. Her pink eyes are bright with anticipation, one hand resting on her leather-clad thigh.

"I want you to understand something, Candy," she says quietly. "Every change I'm making to your body—every single modification—is permanent. These breasts aren't going away. Ever. You're going to carry them for the rest of your very long life. They'll be part of you, defining you, impossible to hide or ignore."

Your breasts continue their relentless growth, approaching what must be a large D-cup now, heading inexorably toward the double-D she promised.

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