The thrum of her phone tore Carmen's gaze from her book on archaeology. Who was it this time? She checked the date; probably Leah. Opening e-mail, she was struck by another picture of Leah Adams, topless and beaming at the camera with one arm hefting up her breasts. A half empty glass of milk sat in the background.
When Carmen wrote the change, she hadn't expected Leah to be so enamoured with the catalyst. Maybe she wasn't. The book held so many nuances, small additions to extract the full effect of an entry that she couldn't predict. Regardless, the pictured futa had progressed faster than anticipated. Another photo showed the beginnings of new boobs beneath the first. Carmen gulped and slammed it on her bed. Too late. Her cock was hard.
"The more I see of your brain, the more I like," Ryuka said, taking the phone, "You're turning her into a real human cow."
"Dammit," Carmen groaned and went to the bathroom. Dread and anticipation crawled through her toes and fingers, while lust rampaged toward her crotch, bulging through her pants and dripping down her thigh. She'd given up on panties or even boxers at home, having soaked through too many sets in just two weeks. All because of Leah.
The first image she handled well enough. It was just a plump, attractive girl presenting her boobs, nothing she couldn't see with a quick web search, then everything snowballed from there. In a mirror of Carmen's desire, Leah's areolae darkened, her nipples swelled to the size of ripe grapes, the breasts blossomed until they eclipsed her ribs and then the lactation. Her dick lurched at the banquet she teased it with.
"I can't keep doing this," Carmen said after wiping away and flushing her latest orgasm. In the moment, she forgot everything and basked in pleasure, blind to the world. Then the glow faded, and she was left facing a goo-covered toilet, and a floor splattered in her vaginal fluids. Oh, and the smell. Carmen kept a stash of air fresheners for it, but she doubted they did anything. Even fresh air seemed crushed under her musk.
She shivered at the word. 'Musk' sounded so base, like she was devolving. And wasn't she? Humans evolved to control their urges, that's what made them the 'superior' species. Wild animals just followed their desires, without a care but for survival and their next meal.
"Don't be so hard on yourself. Humans give into their urges all the time. Gambling, alcoholism, sex addiction, it's all part of being human, isn't it?" Ryuka mused.
"Yes, but... I should be better," Carmen flopped onto her bed, its cloud-like sheets and pillows hugged her on all sides, yet she wasn't satisfied. Above her, Ryuka hovered like always. At times, it looked like she was swimming, her breasts and genitals bobbing in a water current. It'd feel so much better to be held by her, Carmen thought and snapped her head to the side. Her neck and cheeks burned.
"Hmm?" Ryuka floated down, then through the bed. Carmen jolted as the Seikogami came from below, arms looped around her waist. Those massive breasts squished against and around her back, softer than any cushion she knew, "I may be a Seikogami, but I'm also a hugger."
Carmen gulped, trying to keep her thoughts under control. She had a better chance of outrunning a cheetah than ignoring Ryuka. Softness enveloped her torso, warmth teased her legs where the deity's cock touched her. How had she avoided touching it? The skin against her leg was smooth, soft like everything else, yet a hardness laid beneath it. Ready to take hold.
"Let me go," Carmen said.
"No," Ryuka giggled, "It's okay to enjoy this. We're not crossing any of your boundaries, are we?"
"No, but I know what you're like."
"You're worried about the Touch."
Carmen groaned, "Stay out of my head."
"It's okay," Ryuka repeated and kissed the human's head, "I'm not about to force you into anything."
"You did with Leah," Carmen said.
"No, I just helped you make a choice," Ryuka said and moved her hands to cup Carmen's bust, "Now, if I used it here and took advantage of your lust, then that'd be force. I'm not about that. Though these are quite nice now. How come you never play with them?"
"Because I'm not like you," Carmen forced the goddess's hands away. They settled on her belly instead, tracing patterns over the shirt.
"That's what makes you interesting." Ryuka leaned back. For minutes, they laid in silence. Carmen considered getting up several times, but her body demanded she remain. Sleep had become scarce since she transformed Leah. Most dreams featured her pictures, imagining them coming alive and helping Carmen to cum, which never failed. It was why Carmen now stored condoms with her air fresheners. They made going to bed uncomfortable, but at least the mess was contained.
She glanced at the trash bin near her bed. Hidden under paper scraps and wrappers, laid bundles of swollen condoms, each the size of grapefruits and growing. It made her wonder just how much she was producing everyday. The thought sparked her arousal, but the flame sputtered out as sleep came. Atop Ryuka's so very soft body, Carmen drifted off.
And found herself in a familiar dream-scape. It was the diner restroom, standing across from Leah, except her figure was the same as the recent pictures. Broad hips swung as they approached, tits bouncing to her steps, all four of them. The top pair were massive, larger than Carmen's and overshadowed the new set. Two nipples on each breast, each leaking a stream of milk. Leah stopped just out of Carmen's reach and started touching herself.
She groped each breast, keening moans gliding through the air. She dropped one, splashing milk onto the floor, and moved the hand between her legs, where her fourteen-inch cock stood sentry. But she ignored it. Instead, Leah spread her legs and turned to present her pussy. Chubby like the rest of her, its full lips glistened and squeezed between her thighs. Her balls shrouded the clit, but it snuck into sight.
Leah backed closer and closer until the humid heat of her cunt enshrouded Carmen's cock. Its smell drowned out the sweet milk aroma, burying it under the alluring stench of pussy. However, like most dreams, Leah turned back around and returned to playing with her breasts. She could drink from them at that size. Easily. If she did, it'd create a perfect feedback loop.
It was still a dream. There, Carmen's mind was God, the Devil and everything between, with Leah as nothing but a plaything to please her. Taking her upper breasts in hand, nipples swelling with milk and blood, Leah swallowed all four nipples and sucked. Lips pursed tight, she refused to let a drop escape. Her throat worked hard to swallow, loud gulps and sordid moans filling the room. As she drank, her bottom pair ballooned. The top weren't far behind either.
Her hands vanished inside their gorgeous bounty. Two more nubs formed in the areolae, now the size of plates, and grew into their own nipples. Leah paused to take them in as well, doubling her intake. The younger tits were on par with their sisters, each still growing as they were lifted by another pair. Half a dozen fountains doused the floor in milk.
"You can do more." Someone - Ryuka? - said. From shadows, a figure so voluptuous, a face so gorgeous and a presence so haunting stepped out. That wasn't Ryuka. This... creature seemed to struggle with the darkness, like it wanted to be seen and heard and couldn't be, "Your desires go beyond this, don't they? Give them a chance. You won't regret it."
"What are you?" Carmen asked, stroking herself to the pair. How couldn't she? Leah was blooming into a human cow before her eyes, with tits bigger than Stacy's, almost the size of Ryuka's, and the creature that almost seemed familiar. It broke free of the shadows. No wings or cock, so it wasn't a Seikogami. It, she, approached and stood with her arms wide.
"Whatever you want..." Her form changed, shrinking and widening slightly.
"Don't." Carmen shook her head, but too late. The creature, whatever she was, had taken on Stacy's form.