The Futa Experiment by Imouto Kitten

File 02: Grade School Futanari

As Ai slaps her hand down with excessive force to quiet her alarm clock, 
the shrunken scientist feels an uncomfortable tightness in her pajama 
pants despite having slept commando the night before... as well as a 
crusty stickiness.

 Throwing off her covers and pulling her waistband away from her trim 
 tummy, the false child confirms her suspicions. Despite having jacked 
 off several times in the roughly 36 hours since waking up with a cock a 
 grown man would be proud of having, including right before going to 
 sleep last night to collect a semen sample to leave her equipment to 
 analyse while she slept, she had woken up with a major case of morning 
 wood... and with the half dried evidence of at least one wet dream 
 coating the inside of her pajamas.

"Does this thing ever get enough?" grumbles Ai as she climbs out of bed, 
greatful her bottoms at least managed to contain her nocturnal emissions 
well enough to leave her sheets unstained. "Hmmm... that it's still 
there for me to have this problem proves that, if temporary, at least 
this attempt at an apotoxin antidote lasts longer than previous 
failures..... though with the mess it made in the middle of the night, I 
certainly hope either my ovaries are dormant, I'm not producing viable 
swimmers,,,,, or my sperm are incompatible with my eggs." Grimacing as 
some of the non-dried cum slithers down her thigh, she decides, "Either 
way, I need a shower."

Padding to her bathroom, Ai makes quick work of discarding her pajama 
top before peeling the cum encrusted bottoms off, dropping them in her 
hamper with a sigh, greatful she had convinced Agasa to stay away from 
her laundry shortly after moving in. Turning the hot water on, she 
climbs into the shower, and grabbing a washcloth and body bar gets to 
efficiently scrubbing herself clean, ignoring her girl cock best she can 
and paying extra attention to her cum-coated thighs, making sure to 
swipe away from her girlhood, not willing to add any additional risk if 
both parts of her anatomy are indeed potent.

But eventually, she has no choice but to face the elephant in the room, 
or rather the male organ on her female crotch, her shaft every bit as 
soiled with the results of a wet dream as her thighs.

Unfortunately, no matter how she tries to scrub her futahood, every 
swipe of the soapy washcloth against her sensitive shaft sends a jolt of 
pleasure up her spine, and grazing the glands only doubles the 
intensity.

Not wanting to go to school wreaking of stale semen nor risk the 
Detective Boys will stop by and ask awkward questions if she has Agasa 
call the school and tell them she's sick, Ai resigns herself to actually 
taking care of her morning wood as she drops the washcloth to wrap soapy 
hands around her shaft directly.

As palms and fingers glide almost frictionlessly up and down her 
slippery shaft, Ai can't help letting out a moan as her newfound libido 
and lust drive all cognition and rationality from her being, her world 
narrowing to the length of futa fuck meat between her legs.

Breathing heavy and knees shaking, Ai leans against the shower wall as 
her hands increase their speed, the need to clean away her nocturnal 
emissions forgotten, the need to milk a fresh load from where ever her 
body is producing it in the absence of external testicles taking over.

After what seems like an eternity to the lust-addled futanari, but is 
really only a few minutes, Ai's girl cock finally erupts, pearly white 
seed shooting from her tip as her whole body shakes and her legs 
struggle to keep her from sliding down the wall to sit in the tub.

After spraying the far wall with great gooey gobs of her copious cum, 
Ai's rational mind manages to peek out through the momentary sensation 
of sexual satisfaction to remind her just how short her refractory 
period is, and the temptation to go for a second round being the last 
thing she wants at the moment, the shrunken scientist's hands shoot for 
the taps, switching the spray from hot to cold so suddenly she nearly 
jumps out of her skin.

But as the initial shock to her system passes, she can see that the cold 
water has the desired effect, her penis going flaccid, though it shrinks 
very little, dangling nearly to her knees once fully limp.

Sighing in relief, her analytical mind takes over, commenting, "It's 
finally calmed down.... but how long will it stay like this?"

Finishing up in the bathroom, Ai returns to her bedroom to be faced with 
the next problem. Even flaccid, there's no way she can stuff her added 
anatomy into her panties, and her usual shorts and t-shirt combo would 
make an erection impossible to hide... plus, as uncomfortable as her 
morning wood had been in baggy pajamas,, how much worse would it be in 
something more form fitting? And while she was willing to sleep without 
underwear, such was, in her mind, not an option for going out in public.

After a bit of experimentation, she manages to improvise a set of straps 
to pin her flaccid member against her abdomen that would hopefully hold 
if she got erect and which allowed her to put on panties more or less 
normally, with only a small bulge at the base of her penis before it 
stuck out of her waistband.

Undergarments settled, Ai foregoes her usual ensemble in favor of a 
black sundress Ran had insisted she get the last time the older girl and 
Sonoko had wrangled Ai and Ayumi into a girls day. It was a bit more 
childish than Ai prefered, and didn't show off the curves she possessed 
that help sale her cover of being a precocious child in both mind and 
body, but the loose garment would hopefully also hide any erections.

Glancing at the clock and cursing herself for taking so long in the 
shower and to get dressed, Ai dashes from her room, deciding she can 
check the results of her semen analysis later as she hastily eats a 
slice of toast and chases it with her morning coffee before dashing out 
the door for school.

###

Ai manages to regain her usual composure by the time she meets up with 
the Detective Boys on the way to school, effortlessly brushing off 
Conan's suspicions surrounding her unusual attire and Mitsuhiko's 
comment on how pretty she looks, more than used to the diminutive 
detective's tendency to try and analyse people's every action and the 
tall boy's crush on her.

However, it's when the other girl of the group, Ayumi chirps in with, 
"Mitsuhiko-kun is right, Ai-chan looks much cuter in that dress than her 
usual outfit." that the futanari is nearly undone on the spot.

Intellectually, Ai knows it's just an innocent compliment from one girl 
to another, but to the restrained bit of male anatomy pressed against 
her trunk, the other girl might as well have stripped naked, laid spread 
eagle before her and said 'stuff your lollipop in my kitty" or some 
other childish euphemism for fuck as Ai could feel herself growing hard 
at Ayumi's words, the elastic bands she used to secure her girlcock 
digging into her shaft in the most sinfully sensual manner the shrunken 
woman could imagine.

Biting the inside of her cheek in an effort to stay calm, Ai replies, 
"Th-thank you, Ayumi-chan." Trying not to mentally undress the little 
girl as she continues walking to school.

###

However, the school day is barely starting when Ai starts wishing she 
had called in sick or bolted back for Agasa's when Ayumi had given her 
that compliment. Normally, Ai was better than Conan at pretending to be 
engaged at school, effortlessly listening to the teacher with one ear 
while her mind poured over mental math and chemical formulae, but having 
gone from having no libido to having the libido of a teenage boy, 
scratch that, she doubted even teenage boys had it this bad, almost 
literally overnight, her futahood was constantly throbbing in need, and 
while Ayumi had unknowingly set it off, it wasn't particularly picky, 
and Ai found herself mentally undressingnot only her closest female 
friend, but her female classmates she barely knew the names of and their 
teachers. Even trying to focus on the boys in the classroom only got her 
wondering what it would be like to fuck a boy's ass or what effect a 
drug intended to restore a shrunken person to their true body that 
instead turned a shrunken woman into a futanari would have on a boy.

Her only consolation is that her improvised cock harness manages to hold 
up despite every fidget causing the straps to stimulate her shaft and 
that there's no gym class that day... not only would the girls' gym 
uniform make hiding her flaccid member impossible, never mind erect, she 
doubted she could resist pouncing atop a girl showing off her cute 
little butt and luscious, little thighs in those skimpy buruma.

Needless to say, by the time the last bell rang to signal the end of 
classes for the day, Ai was a nervous wreck, possibly even worse than 
when there's a scare that the Black Organization have seen through her 
cover and struggling to keep her stoic facade in place.

However, as she's getting ready to leave the classroom and make a mad 
dash to the professor's to relieve her sexual tension and then get to 
work on an antidote to this botched antidote, Ayumi says something that 
makes her blood attempt to freeze and boil at the same time, "Where are 
you going, Ai-chan? You didn't forget we have afternoon duty together 
today, did you?"

"O-of course not." replies Ai as she says to herself, 'I can do this.'

###

'I can't do this!' Ai screams mentally less than fifteen minutes later 
as Ayumi dashes around the classroom, the cheerful, little girl making a 
game out of the cleaning that makes up the bulk of being on afternoon 
duty, nearly driving the futanari crazy with how Ayumi's frantic motions 
make that jumper flutter, showing off more thigh than the child realizes 
and on more than one occasion, bending over in a way that gives Ai a 
gander at the pale pink panties hugging Ayumi's pert, little butt and 
tempting, little twatty.

As Shiho, she had spent most of her adolescence developing or refining 
poisons and other chemicals that could be utilized for nefarious 
purposes and the Black Organization had no qualms about robbery, 
sabotage, corporate espionage, or assault and murder, but even the 
organization drew a line at rape and sex trafficking and would come down 
hard on even codenamed members who had been found to sexually victimize 
children.

And yet, despite it going against one of the few taboos she had been 
raised with, Ai was struggling not to tackle her friend to the floor and 
have her way with the adorable, little angel who was much too pure to 
have aspirations of becoming a detective, even if she had the aptitude 
for such.

And proving why she would be a capable junior detective even without a 
couple of age-regressed geniuses watching her and her friends' backs, 
Ayumi halts in her cleaning frenzy to ask, "Ai-chan, is something 
wrong?"

"O-of course not," replies Ai, less than convincingly, "what makes you 
ask?"

"Well, Ai-chan is always quiet," Starts Ayumi in her best Conan-like 
tone, "But, it's usually a confident quiet, but you've seemed unusually 
nervous today... I've never heard you trip over your words before, and 
Conan-kun is right, it is unusual for Ai-chan to wear a dress outside of 
a fancy party, and even then, it's never one so plane... and I recognize 
that dress as one Ran-neechan insisted on buying for you despite your 
protests..." pausing for dramatic effect, Ayumi finishes with, "and 
besides, you've been sweeping that same spot since we started."

Sighing at how well the little girl managed to see through her, Ai drops 
the broom she's been idlely swiping back and forth and closes the 
distance between them. Patting the shorter girl on the head, Ai says 
with as much affection as she can manage, "Well, aren't you a regular, 
little Agatha Christie?" Dropping to her knees to be eye-to-eye with 
Ayumi, Ai confesses, "You're right that there's something bothering me, 
and maybe you can help." and as Ayumi opens her mouth to reply, Ai's 
lips capture Ayumi's, part of Ai hoping Ayumi will push her away or 
fight her off even as the shrunken scientist's tongue makes initial 
probes into the little girl's mouth, a minty aftertaste evidence that 
Ayumi is one of the few children in the class to carry toothbrush and 
toothpaste to school to brush after lunch.

When Ayumi leans into the kiss, Ai can't help pulling the young girl 
against her, way pass caring if the child realizes what the throbbing, 
fleshy mass pinned between them is even as what remains of Ai's 
conscience pleads desperately for Ayumi to lash out with gouging fingers 
or a kick to the crotch before Ai can shatter the girl's innocence.

Not breaking the lip lock, Ai stands up, Ayumi wrapping her skinny legs 
around the taller girl's waist, inadvertantly rubbing against Ai's 
erection in the process as Ai moves to lay ayumi atop one of the desks.

When the pair break for air, Ayumi is the first to speak, her cheeks as 
red as her dress, "Ai-chan, why did you kiss me? We're both girls! 
And... and wasn't that an incredibly grown up kiss?!"

"Oh, didn't you know?" Asks Ai teasingly, "Some girls like other girls, 
and I kissed you because I like you in that way... and yes, it was a 
very grown up kiss, the kind of kiss parents would only share if they 
didn't think any children were around and would deny if a child caught 
them." Lowering her mouth to nibble on Ayumi's ear lobe, Ai adds in a 
seductive whisper, "And there are other grown-up things I want to do 
with Ayumi-chan."

Her blush spreading from her cheeks to her whole face, Ayumi replies, 
"Bu-but how would that work? Don't you need both a boy and a girl for 
grown-up games? And why does ai-chan want to play with me all of a 
sudden?"

"Well, there are games that call for two girls," replies Ai, "but 
something happened to me over the weekend that will let us play some of 
the games that require a boy and should answer many of your questions." 
and deciding show is better than tell, Ai straightens up, reaches under 
her dress to undo the straps holding her erection in place, letting them 
fall to the floor before grabbing the hem and lifting the front of her 
dress, her mostly freed erection pushing down on the front of Ai's 
panties and pointing straight at Ayumi.

Sitting up, hands on the corner of the desk for balance, Ayumi marvels 
at Ai's girlcock, exclaiming, "WOW! It's a lot bigger than Papa's or 
even Genta-kun's!" only for amazement to give way to puzzlement as she 
asks, "But when did Ai-chan grow a boy's peenie? You didn't have one the 
last time we went to the hotsprings with Ran-neechan and 
Sonoko-neechan."

Ai is a bit taken aback that Ayumi reacted to the size before the fact 
Ai has a penis, and she could have done without the reminder of the time 
Genta had gone streaking at the beach on a dare from some of the other 
all brawn and little brain boys from their class, the kid was built like 
a bull elephant and hung like one as well, but even if her new bit of 
anatomy seemed to lean towards anything that moves, she could have done 
without the reminder.

Shaking her head and thinking fast, Ai replies, "The professor's been 
messing around with nutrient supplements lately, thinks he can invent a 
miracle cure for that gut of his... well, he mixed up one of his 
concoctions with some of my canned coffee and it had... unusual side 
effects."

"Does it hurt?" Asks Ayumi, curiously reaching out a hand to touch Ai's 
futahood, pulling back as if burned with a cry of, "I'm sorry!" when Ai 
gasps at the girl's touch.

"It does hurtt a bit," replies Ai, "but you have nothing to be sorry 
about, it felt really nice when you touched it." With that, Ai takes 
Ayumi's hand and guides it back to her shaft, sliding it up and down a 
few times to give the little girl an idea of what to do, the bright 
child catching on in a matter of seconds as she starts stroking Ai's 
girlcock with both hands.

Ayumi's hands are much smaller and quite a bit more clumsy in their 
movements than Ai's own, but the simple fact that it's someone else 
touching it, that she can't predict how they'll move more than make up 
for it, and Ai is soon moaning loudly as she Pats Ayumi's head and 
praises the young girl, "That feels wonderful, Ayumi-chan. You're doing 
a great job."

Before long, Ai's legs start to turn rubbery and she pulls away from 
Ayumi's stroking hands to sit down, and as Ayumi slides off the desk to 
continue her ministrations, Ai comments, "Hey, Ayumi-chan, it should 
feel even better if you lick the tip like a lollipop."

"Really?" asks Ayumi as she kneels in front ofAi and wraps her hands 
around the taller girl's shaft once more, and at the shrunken 
scientist's nod, the child pulls Ai's tip down, licking a bead of precum 
from the opening of her urethra before the little girl stretches her 
lips around the bulbous cockhead, her tiny tongue dancing all over it as 
her hands stroke the stiff shaft, Ai nearly melting as she recieves her 
first blowjob.

"Oh kami!" cries Ai under Ayumi's oral assault, gripping the sides of 
her chair in a white knuckle grip as she resists the urge to put a hand 
on Ayumi's head and force the child to take more of her futahood within 
that heavenly, little mouth, "Your tongue feels amazing, Ayumi-chan!"

At the praise, Ayumi's hands and tongue increase pace, the little girl 
humming contentedly, and before long, Ai's self-control snaps, fisting a 
hand in Ayumi's hair before giving her hips a few sharp thrusts into 
that small mouth and erupting, Ayumi's eyes going wide and her cheeks 
bulging as she's forced to take Ai's release down her throat, the fit 
too tight to let any leak through the young girl's lips, though a small 
dribble does come out of the girl's nose.

When Ai releases her grip on Ayumi's hair, the little girl plops down on 
her bottom, gasping for air, spluttering, coughing, and sneezing as she 
tries to clear cum from her airways, Ai's afterglow shattered by the 
result of her latest climax on the closest thing to a little sister the 
shrunken girl has ever had.

"Are you okay, Ayumi-chan!" cries Ai, pulling a hankerchief from her 
dress pocket and wiping the mix of cum, snot, spit, and tears from the 
young girl's face, "I'm so sorry, didn't mean to almost drown you in my 
cum." patting the little girl on the back to encourage her to continue 
coughing.

When Ayumi has finally recovered, she scolds the older girl, "Ai-chan, 
warn me the next time you're going to do that."

"You're willing to do it again?" Asks Ai as she helps Ayumi to her feet, 
surprised the experience hadn't turned the girl off to performing oral 
altogether.

"You're cream is kind of yucky," replies Ayumi, "It's like someone 
glazed a doughnut with salt instead of sugar, but Ai-chan was clearly 
having a good time, so I don't mind doing it for Ai-chan." As she 
finishes talking, the still chipper despite nearly choking on her 
friend's seed girl gets a weirded out expression before lifting up her 
jumper to examine her own crotch, "Huh? I know I didn't have an 
accident, but my panties are soaked clean through."

Smiling at the latest development, Ai replies teasingly, "Sounds like 
you might have enjoyed that more than you realize..." Leaning over to 
hug the shorter girl, Ai asks in a whisper, "Would you like me to return 
the favor?"

"Huh?" replies Ayumi, "But I don't have a boy's peenie, just a vagini 
like girls are supposed to have."

"And you don't think there are ways for one to make a girl feel good 
with one's hands and mouth?" replies Ai, lifting Ayumi under her arms 
and laying her atop the desk once more, getting a good look at the damp 
fabric outlining every nook and cranny of the child's cunny. Pulling the 
gusset of Ayumi's pink panties aside, Ai runs her finger along the 
little girl's slit, Ayumi shivering in response. "Did that feel good, 
Ayumi-chan?"

"Ye-yes..." is all Ayumi can manage, her mind nearly blanked just from 
that initial touch.

"Would you like me to continue?" Asks Ai with a knowing smile, and at 
Ayumi's nod, she slides her finger along the child's slit once more, 
this time sinking between the puffy lips in search of Ayumi's opening.

Finding her target, Ai slowly works a dainty digit inside the little 
girl, careful to slip through a perforation in her hymen without 
stretching or tearing the delicate membrane.

Moaning at the finger wriggling inside her, Ayumi's voice is filled with 
wonder as she comments, "Ai...Ai-chan... is inside me...?"

"Yes, and I've barely gotten started." With that, Ai presses her tongue 
to where her finger vanishes into her young lover and drags it up to 
Ayumi's silky smooth, porcelin pale, and completely bald mons, peppering 
the fleshy mound with kisses before pulling back the hood at the crown 
of her nether lips to expose the tiny nub of Ayumi's immature clit.

When Ai simultaneously wraps her lips around Ayumi's clit and curls her 
finger to tickle Ayumi's g-spot, the little girl lets out a loud moan, 
her whole body writhing as her senses are assaulted with new sensations, 
and smiling to herself, Ai relentlessly increases the intensity, sucking 
hard on the little bundle of nerves as she slides a second finger inside 
the young girl, reducing Ayumi to a moaning, mewling mess.

Of course, being even less experienced in the pleasures of a woman than 
Ai is in the pleasures of a man and the shrunken scientist having a full 
decade of life experience over the little girl, including having dealt 
with puberty and adolescence, it isn't long before Ayumi can feel 
something building deep in her belly, both familiar yet completely new, 
and misinterpreting the familiar part in her naivete, the child cries 
out, "Ai-chan...if...if you keep playing with me like that...I...I'm 
going to have an accident!"

Knowing what's about to happen, Ai only redoubles her efforts, adding a 
third finger to Ayumi's snug snatch, prompting the girl to cry out, more 
insistent, "Ai-chan! I...I'm really going to have an accident!"

"No you aren't." replies Ai in a brief pause from sucking on Ayumi's 
clit, watching with amusement as the girl, convinced she's going to wet 
herself curls up, pulling her knees up to her chest as she crosses her 
ankles, hands fisting and toes scrunching. Pulling away as Ayumi bucks 
atop the desk, fearful of a kick to the head as the child thrashes in 
pleasure, Ai pinches the girl's clit with the thumb and forefinger of 
her free hand as she frantically finger fucks the girl, cooing to the 
child, "Come on, Ayumi-chan, just let go."

"No, no, no, nonononnono!" pleads the curled up girl, tears squeezing 
through tightly shut eyelids, "IT'S GOING TO COME OUT!!"

And then the coil of pleasure snaps, Ayumi's limbs shooting out, her 
back arching, her eyes flying open, and a scream of ecstacy pouring from 
her mouth as her very first orgasm tears through her, far too intense 
for the little girl to properly process, and as suddenly as the child 
had unfurled, she suddenly collapses bonelessly atop the desk.

Withdrawing her hand from Ayumi's pussy and licking the little girl's 
release from her fingers, Ai comments, "Maybe I overdid it." as she 
watches the panting and thoroughly dazed girl sprawled atop the desk.

It takes several minutes for Ayumi to recover enough to push herself up 
onto her elbows and exclaim, "That was the best thing ever!" only to 
notice that Ai is once again tenting her dress, her erection clearly 
visible through the dark fabric without the improvised harness, 
"Ai-chan's peenie is all hard again, do you need me to lick it some 
more?" the young girl getting a bit of a disgusted expression even as 
she makes the offer.

Ai snaps out of her trance, having spent some time simply staring at her 
best female friend's cute, little cunny, and while getting another 
blowjob sounds nice, the shrunken scientist craves something else as she 
replies, "While that sounds nice, I can tell you didn't really enjoy it, 
Ayumi-chan." Leaning over the little girl, Ai whispers in her ear, "But 
there's something else we might both enjoy."

"What's that?" asks Ayumi, curiosity and excitement radiating off the 
irresistably cute child.

Rubbing her clothed cock against Ayumi's cunny, Ai replies, "Want to try 
sticking it in?"

"You want to put your peenie in my vagini?" asks Ayumi, moaning softly 
as Ai continues to grind against her, "Isn't that like, the ultimate 
grown up game? and will your huge peenie even fit in my tiny vagini?"

"Well, a girl's passage is supposed to be able to stretch to let a baby 
come out." comments Ai as she reaches for the waistband of Ayumi's 
panties and pulls the sodden garment down the girl's slender legs, "But 
the only way to find out if it'll fit is to try." With that, Ai lifts 
her dress to let her prod her tip at Ayumi's entrance, the futa's precum 
mixing with the child's juices.

Moaning more loudly from the direct contact between their privates, 
Ayumi replies, "Yo-you can try sticking it in... but please promise to 
pull out if it hurts too much!"

Not sure she'll be able to stop herself if she manages to squeeze into 
that snug snatch, but willing to say just about anything to get inside 
the girl laid out before her, Ai replies, "I promise."  before reaching 
for Ayumi's hips, gripping them firmly as she presses her cock head 
insistantly against Ayumi's overflowing opening.

Much to the shrunken scientist's surprise, Ayumi's lips part easily for 
her girthy member, her tip soon wedged against the child's cherry, the 
holes that had allowed Ai's fingers passage too small to accomodate her 
cock.

Ai wants to just ram herself as deep as possible without warning, but 
manages to restrain herself long enough to inform her little lover, 
"Ayumi-chan, I'm trying to be gentle, but I'm afraid the next bit is 
going to hurt no matter what I do."

"It's okay." is all Ayumi can manage through her own lusty haze, and 
unable to hold back any longer, Ai jabs her hips forward, piercing 
Ayumi's maidenhead and burying half of her girlcock in the little girl's 
tiny twatty, the child's mind going blank at the sensation of being 
stretched around Ai's girth.

Unable to focus on anything other than the silky smooth, super snugh 
snatch squeezing half of her member, Ai grabs Ayumi's ankles and pulling 
the shorter girl's feet up and together, she starts to mercilessly pound 
the child's cunny, managing to shove just a bit more of her length into 
that tiny passage with every thrust. Fortunately for Ayumi, the pain of 
her deflowering is quickly overwhelmed with the pleasure Ai's cock is 
giving her.

"Oh Ayumi-chan!' cries out Ai in her ecstacy, "Your cozy, little cunny 
feels amazing! I never want to stop fucking it!"

"Ai...Ai-chan's" Ayumi barely manages to stammer out between moans and 
gasps, "Ai-chan's peenie feels even bettter than Ai-chan's tongue and 
fingers!"

Spreading Ayumi's legs, Ai leans over her little lover to give her a 
searing kiss, the little girl wrapping her arms tightly about ai's 
chest, tiny fists balling up in the taller girl's dress. As Ai returns 
the hug, Ayumi's now freed legs wrap around her waist, and taking 
advantage of how the little girl is clinging to her, Ai lifts Ayumi off 
the desk and takes a seat, bouncing the child in her lap, the 
scientist's hands finding their way to Ayumi's ass, squeezing and 
kneading those tiny half-moons.

Breaking the kiss, Ai announces, "Ayumi-chan, I'm going to blast your 
little womb full of my cum! I'm going to blow up your tiny tummy like a 
balloon!" and before Ayumi can muster a reply, Ai slams the smaller girl 
down, fully hilting in a pussy for the first time as she erupts with the 
force of a volcano, and as she pumps Ayumi full of her seed, all the 
shrunken scientist can think is how she wants to strap the smaller girl 
to her front, cover her with her dress, and just go about her daily 
routine with her cock warming in Ayumi's wonderful pussy, only 
separating if one of them needs to pee... scratch that, using the little 
girl as a urinal and being peed on would be more than worth it to stay 
hilted in that heavenly snatch 24/7.

The pair bask in afterglow for several minutes before Ayumi regains her 
senses enough to comment, "Wow, that was even better." before untangling 
her arms from around Ai's midsection to encircle the taller girl's neck 
and give her a peck on the lips.

Knowing it would be unrealistic to walk around with Ayumi on her cock 
all the time, but thinking it would at least be nice to deposit her 
nocturnal emissions in the cutie's cunny instead of her Pajama pants, Ai 
asks, "Hey, Ayumi-chan, would you like to have a sleepover at the 
Professor's?"

"I'd love to!" is the little girl's reply, and with a smile, Ai helps 
Ayumi off her lap and to get cleaned up before the pair finish their 
duties and start on their way to the Professor's home.