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Pretty Fins

Summary:

When Alexis Ness was an adolescent, he joined his parents to their research facility— there is where he met her.

The prettiest girl, he ever seen— the way she swam around in circles in the tank, the way her fins danced with the rhythm of the water currents, the way her scales on her tail reflected the light that shined through the water tank.

But he wasn’t the only one that notice her; Michael Kaiser was also Infatuated with the mermaid.

Notes:

DISCLAIMER—
The ages of these characters might irk some people so please read this and decide whether or not, you are okay with reading this— if not, please click off.

Isagi Yoichi (13) After Time-skip (16)

Alexis Ness (15) After Time-skip (18)

Michael Kaiser (16) After Time-skip (19)

Itoshi Rin (15)

Also, this fic will mainly only be using their first names.

And text that is italicized with quotation marks are in mermaid’s language.

Work Text:

The car ride to the research facility was bumpy, Alexis felt it from the way the vehicle began to bounced up and down on the road— it was actually pretty easy to tell that the road there was gonna be rough due to it’s dirt pathway instead of concrete. Even the surrounding was gonna be a telltale sign that the road trip there would be rough; from the miles and miles of trees and nothing else  but forest. 

Alexis kept his eyes on the window to his left, watching trees pass by them only to be greeted by more trees. Closing his eyes and exhaling heavily through his nose, Alexis wondered when he’d be able to go back home. 

The reason why Alexis was forced to come along with his parents for work was because there was an uncooperative test experiment, which prompted many of the scientists to bring in children around her age to open up. Many of the scientists didn’t have children, only a handful of them— including Alexis’ parents, had children, but they also must be around her age. Which eliminated another handful of potential volunteers, lead it to only being him and another kid to be chosen.

His siblings, Anthony and Anastasia, were out of the running because his brother—Anthony Ness, was heading off to college aboard and his sister, Anastasia Ness, was starting her senior year in high school— the ‘most important time’ for a high schooler. Which led Alexis to being chosen instead. Not only the youngest, but also the most available— Alexis didn’t do after-school clubs like his siblings nor had many friends to hang out with, so he was the best option. 

Regrettably, maybe he should had done after-school clubs like football or possibly joined a junior league in something. But, perhaps it was already too late to join; because when you have parents like his, once they say you’re going to be or do something, you can’t say, ‘no.’ 

Reopening his eyelids to the outside world, Alexis felt the car’s engine start to slow down to a halt at a gate— turning his head to the window, he saw the faculty building. The building was surround by a forest but to prevent wild live from entering the facility building, there were barbed wires and long, chain-linked fences, with multiple hazards signs indicating that this was under government control and only permitted personnel were allowed in. 

His father rolled down the driver’s side window to speak to the security guard at the entrance, Alexis didn’t paid any attention to their conversation, but he did seem his father and mother pull out their issued-governed badges to the security guards. Once the guard had approved their arrival, the chain-linked gates opened for their to enter. 

“Alexis, are you awake?” His mother asked, tone stern and stricter than usual. 

Turning from the window to the right, Alexis looked at his mother, “Yes, I’m awake.” There was a slight tightness to his words, words coming out slightly awkward despite living underneath the same roof for sixteen years together— really, Alexis never knew how to really talk to anyone, even if own family. He was better known as a, ‘Black Sheep,’ in the Ness household. Wasn’t as charismatic or brainy as his siblings nor as smart and independent like his parents. 

Without looking back, his mother spoke to him again, “Remember, whatever happens here. You are never allowed to speak about it to about, absolutely no one, but the research facility members.” 

Eyelids faltering, Alexis meekly spoke, “Yes, I know,” before turning his gaze to the window again. Watching the car roll up to a a parking lot, and then his father’s voice ringed through Alexis’s eardrums, “We’re here,” with little to no emotion, almost like a robot. 

At the click, the vehicle was officially parked— getting out, Alexis followed his parents’ in the building, everything look as he expected; overly white lights getting reflected by cleaned, sparking white floor tiles, not a dust-mite to be found or seen. Their footsteps could be heard a mile ago in the halls— echoing so loudly that it would be impossible for anyone not to notice another human-being in the same hall as them. 

Honestly, Alexis was starting to get nervous— everything feeling too real to quickly, as if he was bought to another world like Hogwarts; but the reason why he was feeling like this was because he never did anything like this. He was never interested in science like his family was— in his younger years, his family would make fun of him for being a fan of the occult. Hence, made him nervous to open up about anything to them nowadays. 

And when they arrived to the steel-locked door, Alexis was a nervous-wreck, trying so hard to not break down in front of his parents to keep face; but he was as open as a book, facial expression doing it’s evolutionary goal’s on Alexis’s face— expressing a variety of mixed emotions, from unsure to anxious. 

His parents pretended to not notice a thing, as they punched in the six-digit code into the keypad, and pushed Alexis forward to the opening door, “Alexis, keep your face up.” 

In a way, Alexis was unsure of those were words of encouragement, or words to not disappoint the family’s name due to his actions. 

Stepping in the door, Alexis turned around to say something to his parents— only for the door to close too quickly to make a word out. So, awkwardly standing there, Alexis closed his agaped mouth as he took a look around. 

The room was a shocking difference compared to outside; inside was dark if it weren’t for the blue luminescent lighting, the room almost felt damp like a freshly rained morning or an oceanfront’s. And at the center of it all was a singular tank with a girl—no, a young adolescent mermaid swimming in circles. 

Walking closer to inspect the mermaid, Alexis felt like he had fallen in love at first sight— fair, pale, white skin that contrasted with her radiant feature, long, lushly blue hair with a sprout and an innocent of a deer in her eyes. A face and body of a human but a tail of a fish, fins as ears and webbing between her fingers. 

Alexis watched as she swam around and around in her confined tank, her dark, blueish- green tail pushing her around and around in a spiral. He looked at the bottom of the tank— experiment- 41, Isagi Yoichi. She appeared to be slightly younger than him, possibly three to two years younger, but then again, she wasn’t human which made it hard to tell. 

Pressing his hand against the cold, glass; “Isagi Yoichi, what a beautiful name.” 

From high above, a young voice spoke down to him, “We caught her off the coast of Japan,” which prompted Alexis to look up. There he saw a boy similar in his age, perched on the staircase leading up to the zenith of the water tank. 

The young boy stood up, hands in his pockets and back-straight with an air of arrogance to his stance and posture— completely opposite from Alexis. “How are you?” The boy asked Alexis, his foot stepping down on the last staircase to reach the ground floor. 

Alexis sheepishly took a step-back, “A-Alexis Ness, you?” Retracting his hand from the tank, and watching how the warmth of his body heat collide the temperature of the water tank— leaving a visible hand-print on the glass surface.

The other boy looked at the mermaid in the tank as he spoke to Alexis, “Michael Kaiser.” Following the other boy’s lead, Alexis looked at the mermaid trapped in the tank, her eyes had this dead-blank stare, like she was there but not there at all, all at the same time; possibly enough, “how long has she been doing this?— Swimming around in circles, I mean..” 

 Michael slowly hummed, thinking, “Possibly months?— a year at most,” he said as he removed his hands from his pockets to fold over his chest. 

Alexis looked at Michael, “how do you know so much?” 

“I’m the son of Ray Dark, the director of the research institute— adoptive son,” Michael corrected himself. “You?..” 

Noticing underneath the dark, blue light, the other boy’s hair was blonde with striking blue eyes. “I’m the son of the two researchers here.” Looking back the majestic mermaid swimming around rhythmically, watching how her scales on her tail sparkle in the light and how her hair flowed in the water. Before turning away when he saw her face again, beautiful— is how he would describe it, there was no other word that could describe her. 

Michael finally took his eyes off the mermaid at then on Alexis instead, eying him from head to toe, “Follow me,” he said as he turned around and headed toward the staircase up the water tank. 

Doing as the other commanded, Alexis followed Michael’s orders. Their footsteps clinged against the steel stairwell, it spiraled staircase, so Alexis kept his eyes down till they reach the top of the tank. 

Looking down from the top, Yoichi looked so far away underwater— but at this angle, there was something more tempting about her; could it be her alluring mystique. So tempted by the girl’s presence, Alexis leaned forward into the tank. 

Michael called out in a panic, “DON’T!!” He pushed Alexis away from the edge of the tank, then pulled his collar, “What were you trying to do!?” 

Eyes still on the surface of the water, Michael exasperated his sigh, continually shaking the other, “Hey!?—Hey!?- are you listening?” 

But drowning out Michael’s voice, eyes still on the tank; watching a figure slowly arise to see the commotion. A peeking figure with long blue hairs and doe eyes reflected of their innocence, Yoichi was watching the two argue from afar— still hiding in the comfort of the tank. 

Yoichi watched with only her eyes above the water surface but the rest of her body was still covered, the surface of water made her hair flow and sway with the current— she looked like a spider from the way her hair wrapped around her. 

This was the first time, that this ever happened— surprised, Michael loosen his grip on Alexis’s shirt; both enamored by the young mermaid’s appearance. Alexis tried to get closer, only for the mermaid to shrink away, splashing her tail against the water surface causing the water to punch Alexis in the face. 

Dripping wet, Alexis smiled, “I wonder what make her curious, for her to investigate—“ he said, still feeling the affects of being charmed by the mermaid’s beauty. 

Michael look that the other, he wasn’t caught in the aftermath of the splash, but he brushed off the small water droplets that landed on him, “Probably to make a meal of us,” leaning Alexis a hand to get up, because the other had fall on the floor due to their excursion. “Mermaids are known to eat human, be careful— be careless again, and I won’t save you.” He threatened the other. 

Taking glance to the tank and back at Michael’s hand, Alexis took the other boy’s hand, “How do you know that?” 

“A researcher fall in her tank, and the next day— his body was eaten.” After pulling Alexis up, Michael pulled his hand away from the boy, “So, our first course is to suppress her natural instincts.” 

“In other words, we have to find other source of energy for her to eat?” 

“Exactly.” 

“But how??— she rarely comes up to the surface of the tank.” Alexis started to question his role here, why did he have to find another source of energy for this creature? Why did he have to make her open up to humans?— shouldn’t a researcher be doing this instead of a fifteen-year-old?

Observing the boy’s reaction, Michael focus his attention back on the mermaid swimming in the tank, he found her movement and appearance majestic, every part of her as graceful as a royal. “Trial and error— keep feeding her something new every day and note down what she’ll react to.” 

From that day onward, Michael and Alexis were research partners— testing different types of food from a wide variety of fish to processed foods like bread, but every single one failed to get Yoichi’s attention. And day in and day out, she swam and swam in circles, sometimes switching to doing figure eights underwater; but she never stopped moving unless she was falling asleep. 

Michael jotted down that she appeared thinner than usual— most likely due to the lack of food that she wasn’t eating and the repetitive motion; today, Michael was alone, Alexis has school in the morning— Michael didn’t, he dropped out. 

Perched on the edge of the top staircase to the tank— Michael observed her movements from above, watching her pacing back and forth again and again. It was Zoochosis, or at least something similar to it, polar bears in captivity did the same. Pacing around in their enclosure for several hours or doing repeated laps around the water. And Yoichi was doing the same exact thing— pacing around in the water for hours at a time, never stopping to eat and only stopping to sleep briefly. 

Tapping his pen against his lips, Michael tried to think how to make her stop, how to feed her things that weren’t human flesh and how to get her to open up to humans without seeing them as prey. Sighing as he couldn’t think of anything, Michael laid flat in the ground, staring at the industrial-styled ceiling with his feet’s dangling off the edge. His feet would be touching the water’s surface it it weren’t a couple inches above the tank. 

Was it even possible to tame a wild animal?— and a mermaid, no less. 

Michael couldn’t stop thinking but he also kept drawing at a blank— he had reported his findings to the researchers but nothing was done because, ‘It was their job to figure it out.’ And though, Michael would had loved the assistance, he found other people to be very inefficient. Other people found him to be insufferable to work with as well, so it was mutual. 

But, Michael had to act quick— at this rate, the mermaid will die from starvation under his care, thinking carefully; Michael thought about how different foods might be the same but the taste profile were very different. For example, the taste of Asian pears and Bartlett pears were completely different despite being pears. This could be due to several factors; one, because their were both from different genus and regions. 

 And then, Michael had the genius idea— “kelp taste different depending on regions and species,” which meant it wasn’t the end of the line for Michael, just yet. “I just need to—!!” 

In the midst of his self gloating, he felt a cold, wet hand on his ankle— half-sitting up, Michael looked at down his leg with fear. Yoichi looked up at him with a femme fatale smile, her once innocent doe eyes turned more predatory like a siren hunting it’s prey. 

He watched her licked her lip, as she pulled him down— a large splash of water occurred when Michael’s body collided the surface of the water. When his body was full emerged underwater, he came face to face with her— her skin, fair and pale as ever, her hair flowed around them, and framed her face beautifully. 

He was so close to the mermaid’s face that he could count the number of eyelashes on her face. When the mermaid swam closer to him, closing the distance, Michael was sure that he would die here— but it would be a happy death, seeing her beautiful face before he gets eaten a by her. 

Closing his eyes and he accepted his fate, he felt a pair of fair, small hands cupping his jaw, and a soft kiss on his lips and a tongue prying his mouth open. Opening his eyes, his sight laid upon Yoichi kissing.. him. Gasping for air, Michael opened his mouth for air— and her tongue explored his mouth, his teeth, his gums, his tongue. 

Yoichi’s tail wrapped around him, and hands falling from his jaw to his neck, pulling back, Michael looked at Yoichi. Her face innocently looking back at him, but all Michael could see was her soft, pale pink lips. Gulping on a lungful of water, Micheal knew if he didn’t die from getting eaten, he would die from drowning underwater. 

Chocking off the uncomfortable feeling of losing his body heat- Michael looked at Yoichi with a concerned for his well-being, Yoichi swaying her tail around. Without any empathy to her expression, Yoichi release Michael, watching him swim to safety. 

Before returning to her regularly- scheduled routine; doing laps of circles around the tank. 

 


 

“They’re always watching. 

Looking at me as they keep me trapped here. 

Trying to feed me strange food that smell repulsive. 

Dumb humans— stupid, ignorant humans…”

Yoichi said to herself as she swam in circles while Alexis and Michael continued to try to study her. They’re stupid for trying, but they’re even stupider for keep her trapped here— she knows that someone from her clan will save her, they always do. 

Won’t they?— but they’re taking forever, she misses the ocean, swimming as far as she could reach, eating as much as she wants. 

She hates it here— how long has it already been, it’s impossible to tell; it’s always  dark here, the only light is from the tank’s overhead lights. 

She wants to go home, she’s homesick, she’s sorry that she got captured. 

She should had never swam to the surface. 


 

Alexis watched Yoichi swimming in her tank with Michael by his side again, testing a new species of kelp. Michael dropped the kelp into the tank, which got ignored by Yoichi— really, he wasn’t focused at the task-at-hand at all, all he could think back is why did Yoichi let him leave unharmed? 

Sighing again, no result— again, Yoichi had ignored the kelp inside her tank, her tank would had gotten dirty if it weren’t for the automatic cleanup installed into the tank’s controls. 

“She didn’t reacted again,” Alexis called out to Michael with an exhaustive manner. He stretched out his arms upward, groaning as he does. 

Michael frowns as he scratches out the species of kelp, which left them with nothing else to try left, he’s tempted to give up; hearing the metal-staircase clings with footsteps, he turns to Alexis. 

Alexis sits down next to him, exhausted. Micheal notices that Alexis has something in his hands, which he points it out, “what’s that?”

“This?” Alexis smiles meekly with his eyes closed as he shows off the package that is in his hands, “I got snacks!” Opening the package, reveals a set of sweet treats; slices of cake arranged to be presented nicely like in afternoon tea. “You can have one if you want,” Alexis offered. 

Thinking, Michael thought it would do him some good for a sweet treat— so, graciously, Michael picked a cake slice— Tiramisu. Alexis grabbed the other slice, leaving one odd-one-out. 

Peacefully, they ate together, before Alexis chocked on a small piece of the cake, Michael acting quickly, rushed to pat the other on the back and doing the hind leg maneuver. 

Making Alexis to spit out the pieces of cake, but bits and pieces of the cake had gotten into the tank. 

The fragrance of the sweet bakery entered Yoichi’s nose, causing her to stop doing laps around the tank, and instead following the source of the scent. Her eyes peeked from the surface level of the water-line, getting more and more entranced by the sweet scent. She just knew that she had to taste it for herself, her eyes followed the smell with the similar taste profile. 

And when she found it, Yoichi leaped from the tank’s top and landing between Alexis’s thighs, the boy’s thighs touching either side of her hips and tail. Both Alexis and Michael’s body frozen when she leaped out of her tank enclosure. 

Blinking innocently, Yoichi batted her eyes at the boys and wrapped her arms around Alexis’s neck as she closed her eyes. Pecking his lips, eating off the crumbs of his cake that was now mixed with his saliva, but it didn’t matter to Yoichi— she hadn’t tasted this delicious in a long time.

Alexis didn’t know what to do, a mermaid— with the tendency to desire for human flesh was kissing him. Soft, wet, cold skin against his— Alexis never thought he would ever have his first-kiss, and especially not from a mermaid!!?! 

Feeling his face grow redder and redder, he turned behind him to look for help from Michael, but he was just as clueless about what to do in this situation as well. In fact, Alexis could tell that Michael’s face was burning redder than his. 

With the remain of the cake still in his hands, Alexis nervously offered the rest to the mermaid, “a-ah.. if you want more—“ getting the mermaid’s attention to the treat at his hand. 

But because Yoichi got too excited for more, and Alexis’s shaky hand— the cake fall on his crotch, Yoichi looked down at Alexis’s crotch. Michael’s eyes also followed the commotion, and Alexis’s eyes widen in a panic. 

Before anything could be done, Yoichi dragged herself down, aligning her face with Alexis’s crotch; and Alexis and Michael watched in horror as she opened her mouth, which revealed her cherry-pink tongue. Her tongue started to make laps around Alexis’s crotch— licking off the cake’s icing and indulging herself in the sweet taste of the cake’s bread. 

The room was completely silence with the soft sounds of wet tongue licking off cake icing and bread— which slowly started to sound more and more sticky and creamy. And Alexis’s head was burning in heat as he watched her, he tried to keep his love-handle from getting out of hand and growing but it slowly did when he image her on his cock instead. 

It didn’t help that Yoichi was bobbing her head with the occasional needy glances back up at him and Michael. 

The sounds of wet tongue licking echoed in the room, filling the boys’ heads with naughty little fantasies. 

Licking off more and more cream, Yoichi had finished her meal— till all there was left was a tall mound in front of her face, glancing up. Yoichi had no idea what it was— it wasn’t there before. Keeping her eyes on the humans, she opened her mouth, dragging her tongue from the bottom to the top. Hearing the sound of breath hitching and heavy breathing— both of the human’s face were fervent. 

When Yoichi did it again, the boy’s hand blocked her mouth, “P-please.. n-no more.” Alexis asked desperately, covering his tall standing length in his pants and hiding behind his other hand. 

Yoichi realizing that there was more to eat than humans, obeyed their commands, diving back into the water tank, but instead of returning to doing laps around the tank, she waited at the surface. 


 

In the following days, Yoichi was in one of the boy’s laps, her tail just meekly swaying side to side, as Michael trimmed her nails. The other one wasn’t here again, Yoichi had noticed that one of the pair would always been here before the other. 

She head to Michael’s chest, she heard how fast Michael’s heart was beating— “was this normal?” She asked herself. 

Every human she met had an overly-fast pulse.  The first one was the one that fall into her tank, which she ate. And the other was now, wiggling in his laps; Yoichi felt uncomfortable to be confined in such a position, sitting on top of the boy’s crotch and tail not touching water— it was uncomfortable, especially when she felt a something pointing her hips. 

While Yoichi was struggling to get comfortable in Michael’s lap, his shafted had been reacting to her movement. As he continued to trim Yoichi’s nail, his breathing became more and more laborious, trying to keep his head straight with a growing boner. But the more Yoichi shifted her hips, the more his shaft became sensitive and tempted to blow his load in his pants. 

Momentarily pausing, Michael put downed the nail clippers on the floor and wrapped his arms around the mermaid’s waist— lowering his head to her collar, squeezing her tightly in his arms. This was making a reaction for her, her mouth made a gasping noise, “ugh!!” 

Yoichi slapped Michael in the face, her face saying all she needed— disgusted. “How dare you touch me!?” She hissed, fins flaring  and her tail annoyingly swaying side to side. 

Michael groaned more, biting down on his lower lips as he suppressed his urges— “Right, right— sorry, I’ll finish this first,” Michael responded base off Yoichi’s reactions to his indiscretion actions. 

Shooing back into Michael’s lap, Yoichi laid her bare back on his chest comfortably— unaware of what is happening in the boy’s mind. Michael picked back up the nail clippers and turned her fair fingers— her figure was so petite compared to him, her wrist and palms were one indicators of that fact. 

But another factor of that fact was how light she was— Michael could easily carry her; she felt as light as a feather. 

And again, Michael trimmed her nail— ever since the duo learnt that Yoichi had a sweet tooth, they been tracing her to become more open and friendly with humans. Which was a massive step forward from where they first began, humans were no longer on her menu. 

When Michael was done clipping her final nail, Michael gather the clippings and threw them away into a bin. The walk from the bin and back felt awkward, especially when he had a raging boner that was desperately needed a soft, wet exterior to fuck. When he came back to Yoichi, Michael lifted her up into his arms in a bridal carry— her arms around his neck and her tail flapping around over his arms. 

Walking up the metal staircase, Michael asked Yoichi, “Do you get bored here?” 

Yoichi looked blankly at Micheal but in a way, he knew that she could understand him somehow, nuzzling her head between his shoulders and neck, Michael took it as a yes. At the top of the stairs, Michael placed Yoichi gently in the water. 

Only for Yoichi to still keep him company, then again— there wasn’t much to do, her time was spent doing donuts around the tank or getting pampered by Alexis and Michael; which wasn’t particularly fun. 

Michael knew that animals with higher intelligence needed higher levels of stimulation. Maybe, he should make a request for toys for her to play with. 

But before that, Michael opened his arms— Yoichi knew what this meant, leaping back into his arms. Michael been testing his own personal experiments, he been curious for a long time— how mermaid sexual reproduction. 

Isagi was clearly an adolescent mermaid that did not reach sexual maturity yet, but she will soon be— so, Michael been… training her in someways since he found out that she was easily bribed with treats. 

Michael doubt that Alexis knew what he’s been doing to Yoichi while he wasn’t here, but if he was here— Michael was sure that Alexis would secretly approve. They were both the same side of a coin, both were in love and lust for her; who couldn’t be?— Isagi Yoichi is a beautiful mermaid. 

Digging in his pocket, Michael held Yoichi in his laps again— pulling out a small lollipop, unwrapping it for Yoichi. She automatically opened her mouth, never breaking eye-contact with Michael, as he allowed Yoichi to suckle down on the lollipop. 

He was a sixteen-year old boy with his own needs— did he understand how much authority he had over Yoichi?— of-course, he did. The mermaid was still young in human standards, and even more naive about human nature. 

Keeping her mouth shut and occupied, Michael unbuckled his pants, revealing his leaking cock. But he didn’t touch himself just yet, instead planting his hands on the mermaid’s hips, Michael toyed around with where her hips and tail met, fingers moving from the bellybutton to where her vulva would be if she was a normal girl. 

Fingers repetitively rubbing down till a soft opening reveals it’s self— Yoichi gasped and her breath hitched, she turned back, looking at Michael with tearful eyes. He leaned into her finned ears, “shhh— you’re okay, just trust me. I’ll take care of you,” pushing his fingers inside the warm entrance, his fingertips getting eloped by sticky, soft, wet folds. 

Yoichi turned back, she’s been curious why Michael was playing with her like this. But she nodded, “humans that give me food, are good.” 

Fingers digging and pressing deeper into the underaged cunt, Yoichi’s moans became apparent— breathy, airily soft moans— nothing too hardcore yet, nothing like the pornstars he seen. But that’s okay, Yoichi’s better than any pornstar, prettier, younger too. 

And again, Yoichi felt Michael’s toy pointing her hips again— he’s been groaning and breathing heavily behind her as he played with it, Yoichi doesn’t understand how could it be so fun. After a few minutes, Michael spilled his load on Yoichi’s arse, and when Yoichi felt his warm, load on her again, along with his loosening warm embrace. 

Yoichi climbed out of Michael’s laps because typically when that happened, Micheal was done playing with his toy— she never seen that toy before. It was always behind her. 

Crawling toward the tank, Yoichi felt an warm hand on her wrist, yanking her back— Micheal pulled her backward to laid her on the ground, he was on top of her. Micheal kissed the side of her neck, “Yoichi, let’s play a little bit more longer today, okay?” 

Yoichi didn’t have a say in this— but she just nodded. “I’m going to be teaching you something new,” Micheal said, adding “it will be fun, I promise— you’ll like it.” 

Guiding her, Micheal told her to keep her hand above her head, despite trimming her nail— it was still sharp, and could easily kill him if Yoichi wanted. Doing as she was told, Micheal smiled, then traced his hands over her belly, pressing down on it, “right around here would be your wo— no… it’s better if you don’t know about that yet.” 

Hands going up, Micheal cupped her bare chest— it was nearly developed, but where clearly there— Micheal knew that just in a few years that Yoichi would have a plumped and full chest. Groping the small mound, massaging it, Micheal began to licked his lips. 

Because he was glad, so glad that he knew that Yoichi wanted him just as much as he wanted her— why else did Yoichi kiss him, instead of eating him that day? This had to be the only reasonable explanation.

Pumping his cock again, Micheal’s shaft stood up again, positioning his tip to match the angle of Yoichi’s vulva— smearing his precum over the rims, watching his precum get all over her fish scales was exhilarating. Pushing his tip, Micheal bit into his lower lips— slowly pushing forward into the svelte, figure beneath him. 

Feeling a soft, warm embrace engulf his tip, and causing a big reaction from Isagi— she gasped loudly, like a pornstar. Micheal whisper into her ears, “this is only just the tip. Breathy slowly— because the rest is going to expand you.” 

When Yoichi looked down at wheat Michael was referring too, and back up at him, “w-was that the toy you been pointing behind me..?” It was big, too big— Yoichi wanted to push Micheal away, that wasn’t going to fit inside her!! 

Her body flailing underneath him, Micheal groan, watching her fear in her eyes. Micheal knew that he wasn’t going to be gentle any longer— pistoling his cock in with a care, Yoichi’s mouth opened wide but without a scream or a noise— a silence scream. 

Rolling his hips, Micheal buckled in and out of her wettest, inviting him deeper and deeper inside— beckoning him. Fast, ruthless and rushed; that’s how Micheal liked fucking. Hips pushing into Isagi deeper and deeper as he could get, feeling her wetness eating up his cock in her navel was a pleasure. 

With each push, the squelching sounds of slimly, wetness goodness was exacerbated. A loose inside with just the right amount of tightness to her cunt— Micheal wondered if every mermaid was just like Yoichi or was Yoichi just made to become a cocksleeve? Either way— Micheal loved every moment of it. 

And just as he was about to off load his seed, Micheal heard the door open, and Alexis walking into his excursion with Yoichi becoming a moaning mess beneath him and Micheal fucking the living out of her. Pulling out, Micheal cum all over Yoichi— his sperm shooting all the way to her stomach and chest, and just the tiniest bit of his seed landed on her face.

Yoichi face was reddened and wet from the release of tears and the heat of Micheal’s toy  playing with her insides.

After that day, Alexis started to join in their little game— Alexis having a fondness for Yoichi’s mouth while Micheal had a fondness for her vulva. Both of the boy were vulgar in their own ways with Yoichi. 

Today, Yoichi was resting on the edge of the tank— playing with a lobster plushie that Micheal had gotten her for being such a good girl for them. Patiently awaiting Micheal and Alexis to come play with her again. 

Surprising enough both Michael and Alexis arrived at the same time today— she wondered why? Noticing that they had a plastic bag filled with something, she was even more curious.

When they came to the top of the tank, Yoichi leaped out of the tank. Alexis was standing there with a gentle smile, “We’re going to have a lot of fun today, okay, Yoichi?” 

He sat down, Micheal stood by— watching. Alexis unbuckled his pants, “Yoichi, hand,” he asked for her hands— giving her hands, Alexis placed it on his cock, “I doubt that Michael taught you have to do a handjob before, but I’ll teach you.” He said with a reassuring tone.

His hands over hers, he guided her how to pump a cock, starting slowly, getting his cock warm and standing. “Now, Yoichi— start rubbing it faster,” he said. 

Slowly, Yoichi was learning human language— going faster, and faster, Alexis stopped her, “Yoichi, keep her hands firm, don’t loosen your hands on me, it’s lose the pleasure. You got it?”

As she did, Micheal and Alexis smiled at how earnest she was with them— so far, none of the other researchers were able to get close enough with her for testing. They still had her all to themselves. 

Pumping Alexis’s cock, his slit getter to get more and more aroused by how Yoichi was doing, starting to leak with precum; dragging Yoichi’s face closer to his cock, Alexis patted and awarded Yoichi with a smile, “Good job, good girl.” Fumbling around in the plastic bag, Alexis grabbed as bottom of whipped cream, shaking the container and opening the cap. 

Alexis started to spray whipped cream around his cock so it would be sweet for Yoichi, “Now clean it off for me; won’t you, please Yoichi?” 

His cock stood tall in front of her face— perhaps it was taller than the height of her head. Opening her mouth, she licked off the cream from bottom to top, “that’s right, good girl.” Alexis complimented her. 

Her tail swayed happily, when he complimented her performance— Yoichi starting slow and pushing in the top of Alexis’ shaft into her mouth, keep her eyes on his reaction for a compliment. Alexis smiled with a satisfied and sadistic expression, slightly throwing his head backwards— head growing red and flushed from the whiplash. 

“Fuck.. ya, ya that’s good— fuck, really fucking good.”

Yoichi gulped more of his shaft into her mouth till it reach the back of her throat, Alexis groaned softly. Soft, plumped lips around his cock, and gorgeous view from above— doe eyes with unshed tears looking up at him. But there was still more that Isagi need to take in, the base of Alexis’ cock was still left untouched by her mouth. 

Inside her mouth, Isagi licked and licked away the sweet cream away from Alexis’ toy,  her mouth growing sticker and sticker with each passing minute. Cheeks hallowing as she sucked down on his tip, and her eyes growing hazy from her tears. The corners of her lips and jaw were started to feel sore, wanting to pull back, Alexis roughly handled the back of her hair, pushing her forward to his cock. Forcing her to take it all in, Yoichi gagged and eyes rolled slightly back. 

Starting to feel the release of dopamine, Alexis came down Yoichi’s throat, forcing her to take it all in— every single last drop of his seed. 

Pulling off, Yoichi took hardly breath regularly— but even after one release, just like Micheal, he wanted another round. But seeing how exhausted she was for the first, Alexis started to jerk off his own cock, shooting his load all over Yoichi’s pretty little face— sperm land on her nose, eyelash, lips and hair, to Alexis— she looked beautiful. 


 

Three years later— Yoichi had started to adapted and learnt human language, though her speech was still rough; it was understandable. 

The research faculty underwent some changes— the funding was significantly reduced and the most of original staff had left, but where old one leaves, new one fill in— both Micheal and Alexis became interns at the research faculty, and well on their way to becoming full-time researchers. 

They weren’t the only one that underwent some changes— Yoichi’s body been maturing in ways, hips widening, chest-size increasing, arms lengthening. And finally, her body had reached sexual maturity for a mermaid— Micheal and Alexis had sure to make good use of her beauty and body once in a while, not as often as before because both were busy with other factors in their lives. 

Pressing her face and chest against the water tank, Yoichi groaned as she was in pure boredom. She’s been stuck in the same place for approximately four years now. Patiently awaiting for Micheal’s and Alexis’s return— she played with her hair, twirling it around her finger.

Blowing bubbles underwater, and watching them burst, Yoichi slowly swam in circles— occasionally resurfacing to look over the tank’s limitations. 

But— finally!!— when she heard the doors to her room open, Yoichi swam back to the bottom of the tank, happy to greet Michael and Alexis again. Michael smiled and waved to Yoichi, Alexis did the same, “Good morning, Yoichi,” they were both at the bottom of the tank. Micheal climbed the familiar metal-staircase, and tapped the side of the tank’s edge, “Yoichi!!— come,” he called out to her. 

Happily, Yoichi leaped out of the water tank and into his arms, purring with her throat as she nuzzled his neck. Micheal felt how plumped her chest had grown— once nearly nothing but a small mounded turned into a full F-cup. Her hair covered her nipples but her upper-half of her body was bare. 

Alexis, interrupting the reunion told Michael, “Ready?” The other man nodded, lifting Yoichi up in a bridal carry.

And instead of just going downstairs, Micheal and Alexis exited the room with Yoichi, this was her first time!!— outside of her room in years!! So, when she exited the room for the first time, Yoichi winced and hid her face between Michael’s shoulder when the bright light shined in her face. 

Noticing this— Alexis took off his coat, and over Yoichi’s head to dim the brightness. 

The researchers were taking her to somewhere new; earlier in the week, they got a call from a aquarium that an injured merman was discovered, their own facilities were full, so they placed the merman in their hands since they were caring after a mermaid for a few years. 

The merman was around Yoichi’s age— probably a little younger than her by a few months. The aquarium labeled him as Itoshi Rin. 

Alexis and Michael had decided that since Yoichi was already friendly with them, that they would introduce her to the new merman. Alexis punched in the six-digital code, and waiting for the door to open. 

Upon opening the door, It was slight dark like Yoichi’s room but had large tank and windows behind it— black-out curtains off the the side of the windows for when the sun was at it’s peak. But Yoichi couldn’t help but notice— a merman, injured but bandaged up with a muzzle, slowly swimming. 

The merman was still wild and untamed— so, for safety, the researchers had muzzled him to prevent another accident like last time with Yoichi when she was still untamed. Yoichi’s been tamed and removed of her mermaid instincts to hunt humans, so Michael and Alexis were hoping to do the same with Rin— removing his need to eat humans by introducing him a female.

Scaling the stairs to the top of the tank, Michael kissed Yoichi’s forehead, “Be a good girl, okay?”

She looked up at him, nodded as she felt his hands on her chin— lifting her chin up, sorting his lips over hers, “Yoichi will be a good girl.” Referring to herself on third person, Alexis will have to correct her later— but not now.

Gently placing her into the tank, Michael and Alexis headed down to observe the merfolk interact. As beautiful as Yoichi may be, she was extremely shy but happy to see another merman, swimming up closely to him, “hello..” 

Rin glared at her, “who are you!—“ he bared his fangs at Yoichi, causing her to swim slightly farther away from him. Just by one glance Rin could tell what they did to her— removing her wild instincts and taming her to become their cocksleeve. A slut for human dick, a whore that couldn’t make her own decision without someone else. 

Her body was even a reflection of this— overly trimmed nails, which removed her weapons for killing and fangs dulled. 

But one thing that Rin also couldn’t help but notice was her body, large chest, small-gradable waist, child-bearing hips, a long-shiny coat of scales on her tail, and the a child-like innocence removed from the harm of the outside world. Clearly— the researchers been caring for her, taming her, keeping her as a pet.

In other words, she was unknowingly groomed to become a sex slave. 

As much as Rin found her attractive to his sexual needs, he also found her pathetic— Rin would had never allowed himself to be costumed to humans so easily. And just as much as Rin wanted to suppressed it, Rin felt the need to breed her— wether it may be her appearance or mating season was coming arise. 

Yoichi glanced over at the researcher— Michael and Alexis watching her back, and back at Rin— holding her arms close to her chest, she nervously swam closer to Rin. Praying that Rin would let down his guard down. “I’m Yoichi! What’s your name?..”

Despite being older, Rin saw how much smaller she was— “you’re tiny..” coming face to face with her, watching her lips. “I’m Rin..” 

Hey, Rin— are you okay?” She was referring to his injuries, swimming closer and closer to him—so, close that her chest was touching Rin’s arms. 

Growling, Rin bared his fangs once again, swimming away to put some distance between them, “Are you doing this on purpose??— or were you trained to be like that!?” 

Confused, Yoichi tilled her head to the side, “like what?” 

LIKE A FUCKING SLUT!!— flaunting your fucking assets in my face, it’s gross!!” 

Frowning, and brows knitting, “no im not!!” Yoichi tried to defend herself— she had no idea what Rin was talking about. Assets?- slut?— what’s that? 

Oh my fucking god!!—“ Rin swam closer to her, slamming her back against the tank’s glass, pushing his hips against her. Rubbing them together till his shaft appeared and stood on its own and revealed itself, and Yoichi’s vulva opened. 

Mesmerized— Yoichi happily hooked her arms around Rin’s neck, “Oh!— I know what that is!! You want to play with me, right? Michael and Alexis also have a toy like yours!! They love playing with me.. do you want to play with me?” 

Temptation eating away at Rin’s conscience, “I’m gonna play with you— till your eyes roll back and I get you infested with my children.” He threatened Yoichi as he pushed his cock inside— her inside were loosen, wet, soft as he expected, one of the researcher must have been railing her since young or for a long time to have such a loose cunt like this. 

Even her moans felt trained, “ahh!~ ah! R~Rin! R~Rin!!~ngh, ughh,” Yoichi moaned into his ears, pushing her hips against Rin’s for more till he was balls deep inside her— what a slut. 

Rin watched her boobs bounced as they fucked, he would have taken a sweet bite off her chest if it weren’t for the muzzle. Instead, he groped her large assets in his hands, playing with her nipple— getting her more riled up. Thrusting faster and harder, coming inside her but never stopping, after the first round was the second and the third. 

He couldn’t stop from indulging in her wet folds— it was addicting, the way how her cunt would occasionally clutch around his cock as he piston in and out of her— like a well-trained cunt. Her needing voice moaning out his name as he fucked the living out of her. 

Micheal and Alexis watched from outside the tank; as Rin had sexual intercourse with Yoichi, studying them, well also knowing how good she felt. They knew it all too well— her whining pleads, her insides sucking them in further inside her, hips beckoning for more. 

They all knew it except Yoichi— that the mermaid was an absolute slut.