Amanda yawned and stretched to pop her joints. She didn't have classes that day, though Amy did. Despite the Amazon's protests, Amanda convinced her to go, largely to let her body relax after last week and the subsequent nights thereafter. Turned out she could only handle so much of Amy's new size. Her pussy ached in satisfied exhaustion, still loose from last night, and her balls were desperate for a chance to refill. She didn't want to so much as touch her reddened cock.
It was a blessing that she took the day, as Eliza had finished tinkering with new formulas. The scientist wasn't to be reckoned with when she got inspired, and Amy had done that and more. Eliza called it a challenge to shrink the eight-foot futa back to two-feet, however she wanted to try other things. She wouldn't say when asked, but promised they'd be enjoyable.
As such, Amanda was on her way to the science building. It was a pleasant enough day for a walk, the sun on her head and wind bellowing through her summer dress. She rarely used it in favour of more daring clothes, though the last thing she wanted was sexual attention. For the next few hours. Futanari recovered from sex faster than most would heal a scratch or small bruise. Before nightfall, her cock would be its normal shade and her pussy salivating for Amazon cock.
In Eliza's lab, she found the petite futa examining a series of vials. All were a range of colours, from clear as water to a fiery pink. Eliza tapped at her tablet, muttering to herself until she heard the soft clap of the door. She turned, grin on her face, which fell at the sight of Amanda and no one else.
"Oh, I thought Amy would be here."
"She had classes," Amanda said and strolled over, ignoring the disappointed pout, "So, these are the new formulas?"
"Yes. I had hoped Amy would try them here, but I suppose that's not possible. Anyway, let me run you down the line. From left to right, you have your average Shrinkage formula," she tapped the clear one, then a blue vial, "This shrinks specific parts. Of course, I don't know if they'd grow or not. It's sibling here is the opposite and grows them instead. I've yet to isolate how to cause it for the entire body, but I imagine I'm close. It's all temporary of course. Just a quick injection into the desired part and et voilà ."
Amanda nodded and listened to the explanations, though the last two were of little interest. Last thing she wanted was her darling behemoth to grow disproportionately, nor would she dream of shrinking her. Perhaps if she was sore, otherwise she found no reason for them.
"Hmm, I see you're not impressed, then feast your eyes on these two." Eliza came to the last, one a regal purple and the other pink.
"Okay, what do they do?" Amanda asked.
"The purple temporarily augments cum," Eliza said with a proud smirk, "From its viscosity to the amount itself. If you're looking to get knocked up, trust me, this is perfect."
"Maybe not just yet," Amanda said, her cheeks warm. She didn't like thinking about her and Amy's future often, college romances usually don't last very long, and between them they slept around. It seemed inevitable that they'd find someone else and drift apart. Until then, she was happy to live day to day with her gorgeous Amazonian girlfriend.
"Don't worry, it makes the new sperm sterile. Everything here still has kinks to work out," Eliza sighed and scrolled through her data, "It's amazing how difficult it is to make the body shrink and grow."
"Hmm, I bet," Amanda took the basic vial and palmed it, then at the specific growth formula, "Hey, any idea if these will work on other people?"
"Can't say. I used Amy's DNA as the base for the moment. Did you know that Amazons grow far longer than others? Most humans stop development by twenty-five, but an what I've seen implies that Amy could grow well into her thirties. Even without the growth factor of my formulas, she would be gigantic. Don't you think?"
Amanda hid an erection. The difference in size between her and Amy was already incredible, almost three whole feet, but it could be more. If Amy grew enough, she could pick Amanda up with one hand, or have breasts so huge they were like king-sized waterbeds. Like they weren't massive enough. She shook the thoughts off and focused.
"Well, you made this growing potion-"
"Formula!" Eliza snapped.
"Sorry. 'Formula'. Could you make someone extra stretchy? I love Amy, but her cock right now is hard to handle. Especially with all that power behind it," Amanda explained, a flutter of lust working through her aching snatch.
"Oh, now there's a thought. It should be simple enough. Perhaps a variation on the growth formula, although I don't it will be that easy. Here, you take those, and I'll get to work," Eliza bounced around the lab, gathering possible components. Her bulge shifted and enlarged.
"I see someone's excited by the idea," Amanda said as she pocketed the vials.
"Shut up! I'm working. Now, shoo."
Amy had classes until 2PM. It had just gone twelve, so Amanda headed to the cafeteria. There, she thumbed through the various formulas. Eliza had gone overboard. They didn't need so many, just one that would shrink Amy to her adorable two-feet self. Not that it affected her curves much. Even at that size, most normal women would take umbrage with her breast size. Her cock wasn't anything to sneeze at either.
She couldn't wait until they did it again. What should she roleplay next? Perhaps a dragon that captured Amy to sire its children, or to add to its den of riches. Amy was absolutely worth more than any gold or diamond. Or she'd be the evil villain and Amy the hero, shrunken by a curse. Other choices whirled around until she calmed the idea. Before that, she wanted to enjoy Amy's current majesty.
"Hmm," she hummed and palmed the cum augmentation vial. If it amped production high enough, Amy's already huge balls might inflate. It was only temporary. Amanda separated it from the others, her mind set. As she ate, her libido surged in daydreams, forcing her genitals back into fighting shape. Tonight would be messy.
She returned to the sorority house long before Amy. A relief, as she needed to make sure people knew not to interrupt. Most nights her sorority sisters had the decency to give her and Amy privacy, but given the number of threesomes and orgies they hosted, it was inevitable that someone would walk in. Not this time. Amanda wanted every drop of Amy to herself. She stuck a pin by her and Amy's name on the room board, so no one would enter uninvited.
She might regret that choice come morning when she staggered to class with cum pouring from her stretched out pussy. A shudder ran along her spine and into her groin. At Amy's current size, that was more likely than not. Amanda pushed any worry, and desire, aside for the moment. She went to their room and put the vials away. The pink one caught her eye. Eliza hadn't explained what it did.
Maybe she should call and find out? No, the scientist turned her phone off when she got excited, and Amanda had no doubt that she was. Just leave it for tomorrow, she thought. She kept the orange out on a bedside table to avoid a mistake. Alongside it was several bottles of lube, muscle relaxants and some rope. In case she wanted Amy even more backed up.
Preparations finished, Amanda did the only thing she wanted more than to see Amy. Sleep. Last night was long and exhausting and, though her body had mostly healed any aches in her lower half, she was tired. Not to mention she expected a repeat tonight. At the least.
Doors made for interesting obstacles during the rush between classes. People swarmed to exit and blocked Amy's path. She might have waited if her own schedule wasn't crammed to the point it overflowed, leaving just a few minutes to reach the next lecture. None of which would be an issue if Amanda hadn't talked her into it. 'Think of your grades' and 'what if they kick you out'. Like they would; she was a model with an unbeaten record in volleyball. All she did was attract attention.
Even the regular attendants at the college stopped and stared when she strode past. Joanne had provided an ensemble of outfits that fit her new dimensions, just loose enough that imaginations went haywire trying to imagine her intricacies. Such as what her cock looked like. Anyone could tell it was huge from the bulge, but what about the veins, the colour, or if she was circumcised. The same was true for her breasts.
More than a few of the taller students bumped into her on purpose. She heard them muttering afterwards, about how her tits were real, no implants could be that soft. Amy shared their enthusiasm. During the duller lectures, she would cup and roll the flesh between her hands. It took both just to handle one. Oh, but they were delicious.
Their shape held strong, yet they poured between her fingers at the slightest pressure. She didn't wear a bra, comfortable with their weight, and, though she didn't say, titillated by the eyes that followed her plump nipples. None of the staff reprimanded her. Given that bras for her size were nigh-impossible to make.
In her last class of the day, she laid them on the table and rested her head in the portable cushions. They splayed across the table, well past her shoulders in width and even threatened to roll off the front. A girl sat in front of her struggled not to gawk. Amy giggled at the discrepancy between their head and her breasts, which were at least twice the latter's size. Oh, she couldn't wait to smother Amanda in them when she got home.
Shrinking was amazing. Taking on a perspective most people had around her painted the world in a new light, but being so huge that she dwarfed almost everyone else made her underwear tighten. Like last night, when Amanda rode her cock. It protruded from her groin all the way past her breasts, while the normal girl's insides squeezed and pulled on her for more. She licked her lips at the memory of her lover's plush ass sat against her equally large balls.
