Archive of Our Own

Spring was an interesting time. It used to be Shadow Milk’s least favorite season, what with the slowly warming weather and the bugs that began to be a problem again. The mosquitoes were annoying, even more so when he had to be in swamps for his research.

Really. Swamps. During spring, when bugs were coming back and flowers of unknown origin were blooming. How smart! He still doesn’t forgive White Lily for that incident. The shame will never go away no matter how much he tries to forget what happened.

Even then, with all of his complaints, he supposes spring does have its benefits. It was easier to conduct his research during that time, and it revealed to him more secrets that he never would have seen before. Like perhaps an unknown pod of merfolk in the ocean that he just so happened to find out of sheer coincidence.

Merfolk were thought to have been extinct, the last sighting of them having been well over 329 years ago. Such a discovery was a once in a lifetime chance — Shadow Milk would have been a fool to ignore such a thing. Who would have thought that it would be his greatest project yet?

That was how he found the object of his desire. Perhaps even affection.

One of the merfolk, a merman by the name of Pure Vanilla, was his favorite subject. A creature with a moral code that grated Shadow Milk’s nerves on more than one occasion. Constantly preventing him from going further with his research, constantly asking Shadow Milk to stop lying.

It disgusted him how this merman thought he knew Shadow Milk. Yet despite everything he couldn’t quite get enough of the odd thing.

Both attentive and empty-headed, caring and yet uncaring. An enigma that made Shadow Milk keep coming back for more and more. He was almost like a drug, this merman. Keeping Shadow Milk helplessly addicted to the mystery that he was and endlessly needing the adrenaline that came from those sharp dual colored eyes that could see through him without even trying to.

Truly, what better a creature for Shadow Milk to obsess over? Something that could slaughter him within moments if he so desired, with claws so sharp they regularly left him with cuts all over his body even from the softest of touches. A creature with fangs so sharp he’s watched Pure Vanilla kill a fish simply by crushing it in his mouth.

A person that has only treated him with revolting kindness ever since they met. No matter what he did.

He has never claimed to be sane, or that he cherished his desire to live. Shadow Milk has chased adrenaline and danger ever since he could remember. But every time he met with the merman, every single time they conversed and he was brought gifts, he was convinced that it would be his last time alive.

It was addicting.

Spring had arrived again, and so had Shadow Milk. His research brought him here yet again, back to the rocky cliffs by a beach, shallow but not enough to be close to any form of civilization. Perfect for a pod of merfolk who wished to remain secret, hidden. Perfect for spawning grounds for small merfolk who could not withstand the crushing depths of the ocean like the adults could, not when their magic had yet to stabilize.

The beauty of merfolk’s magic was one he still couldn’t understand. Their closely related cousins, sirens, could not travel to the same depths that merfolk could. Their lithe bodies not built for it, more suiting the Twilight Zones and above. Their magic had adapted to be more focused on hypnosis; aimed to lure in their food rather than exhausting themselves through hunting.

Merfolk were so unseen because, as he learned, they lived within the ocean’s Abyss. Their giant bodies had evolved to withstand the crushing depths, the darkness and the cold. They could swim quickly, faster than he ever imagined. Able to devour prey from the Twilight Zone and bring it back to their pods before an hour had even passed.

One would wonder how they could see in the darkness that the Abyssal Zone was coated in. The answer was so painfully simple – their scales would glow in the dark, perhaps even more so to their eyes.

Shadow Milk has only seen Pure Vanilla’s scales glowing once. When he lost track of time studying him and the merfolk fry that had recently been born. The one day that Pure Vanilla guided him towards the spawning grounds instead of keeping him away. When the merfolk needed his help.

He still remembers the way that those blue glowing marks all around Pure Vanilla’s body almost made his already pale scales turn white, the white eight pointed star on his forehead making his eyes shine as if they were gems.

It was pathetic how much Shadow Milk wished he had a camera that worked underwater that day.

Though, he was curious why Merfolk chose to come to the shallow waters of the Sunlit Zone instead of remaining somewhere lower, perhaps like the Midnight Zone. For what purpose did it serve to come so far up? Merfolk fry were close to the size of a four year old child once hatched, and-

Splash

… So it seems he has company. Finally.

Shadow Milk looked up from his book, peering outside the cabin window. A familiar tail of light cream scales flickered past, two tanned hands were already on the side of his boat and pulling up Pure Vanilla. Those two slitted eyes pierced him like so many other times before and Shadow Milk had to fight back his urge to pull the gun hiding in his desk.

Without another word, he got up from the couch he was lazing around on and put the book down on his desk. Like so many times before, Shadow Milk casually grabbed a hair tie from his desk, tying his hair up in a messily done bun and walked out to the giant merman, lazily staring at him.

“Pure Vanilla.”

“♩ ♬ ♪ ♪ ♫ ♭~”

Again with the language of the sirens. He’s not even sure how the merman learned it, considering he isn’t a Siren. This is how their conversations have begun for months now. Pure Vanilla can greet him normally, they have before but for some reason he’s just so dedicated to that.

If only he knew how to speak it. A shame, really.

Without urgency, he walked over to the back of the boat. Pure Vanilla followed him as he walked, a hand trailing on the side of the boat, only to pull himself back up slightly when they got to the back. The weight of his giant body pushed down the stern yet despite that there was a small smile on his face. Shadow Milk rolled his eyes and sat down.

“So are we playing the same game or are you going to spice it up for me, you overgrown fish?” The venom from his mouth was natural, comforting. The adrenaline coursing through his veins and the urge to run as fast as he could made it so much easier to be cruel, to be rude. Yet like always, Pure Vanilla smiled at him again and reached forward, gently bopping his nose and leaving him angry. “Stop that!”

Pure Vanilla laughed as best as he could. The ugly noise sounded more like someone was trying to chortle while drowning and singing at the same time. “But you are adorable when you scrunch up your nose from the sea water.”

A scoff was natural. He fell into his habits, already reaching forward for a few scales on Pure Vanilla’s face to check their quality and to see if scale rot had taken root again after his previous cleaning. None had.

“I do not.”

“You do.”

He would crumble this thing. It didn’t matter that Pure Vanilla’s hands were slowly reaching up from the boat to his waist, to gently rub circles into his thighs and stray too close to his more sensitive areas. It didn’t matter that Shadow Milk found himself leaning forward to get a better look and to even get closer into Pure Vanilla’s grasp.

If he did not acknowledge it, then it did not happen. The excitement building under his skin at the idea of it finally touching his dick wasn’t real, and it did not exist.

Instead he went to focusing on the things he needed to document before he could get any sort of casual conversation started. The merman’s scales looked fine, his attention was squarely on him but Shadow Milk could see his fin-like ears twitching occasionally from the noises of machinery from his boat. No noticeable difference in behavior.

If he really wished to look for a difference, it looked like his scales were a subtly different color. Instead of #fefaec, it was closer to #ffffff. Which was odd; they hadn’t had this kind of shine to them before. There was even a subtle blue hue on a few of the scales he knew glowed in darkness or under UV light. Strange.

Honestly, it felt like the merman was presenting himself to a potential mate. He’s seen a few of these same behaviors in some of the other merfolk he was able to get a glimpse of before Pure Vanilla distracted him. Scales that seemed to shine brighter than before, the parts of their scales that would glow seemingly on display despite Shadow Milk being unable to see what was being shown off.

A pity, really.

Pure Vanilla’s tail swished back and forth beneath the waves, catching Shadow Milk’s attention briefly. His attention was only for the sake of checking if the tracker around the bottom of his tail was damaged in any way. Luckily, it wasn’t. However, the tail movement was a new behavior… it almost made the merman seem impatient, restless. The thumbs on his thighs were rubbing deeper into his skin than they ever had before. Those slitted dual colored eyes were piercing his body like he was prey.

Shadow Milk flicked Pure Vanilla’s forehead. The merman let out a sound akin to a squeak and a growl mixed together in a blender. The hands on his thighs pulled away just to hold his forehead, already beginning to pout slightly and looking at him with confusion.

“You had it coming.” It was so satisfying seeing such a huge creature be reduced to nothing but a pout. It made the adrenaline and fear in his body pulse with an energy he had grown helplessly addicted to. “What? Did you expect me to just ignore how weird you’re being?”

Hands were back on his waist, thumbs back on his thighs. “It’s not that weird.” He murmured. Pure Vanilla was even leaning in, almost as if trying to box him in and keep him right where he was. Shadow Milk despised that yet made no move to try and free himself. “If anything, you’re the odd one here.”

Him? The odd one? What drivel. Shadow Milk scoffed yet again and pointedly pushed away the big merman. Pure Vanilla whimpered and listened, falling back into the water and staring up at him from beneath the waves. Long blonde hair surrounded him like a halo and Shadow Milk wished that it would be ruined.

He took off one of his shoes and put his foot in the water, kicking at the merman and ignoring the way his chest felt tight watching Pure Vanilla laugh silently. He avoided Shadow Milk’s foot seamlessly and a soft kiss was placed on his ankle.

Disgusting thing.

But his behavior was still relatively in its normal range. Playful and lighthearted with the undertone of danger. Nothing unusual, and considering the pod wasn’t here either it meant the merman was in good health. Pure Vanilla also being here with him meant that the pods' health must be fine as well.

Although… It was quite odd that Pure Vanilla was still with him during the beginning of the season. Usually it would take a week or two before Pure Vanilla showed up, sometimes with a merfolk fry or two following closely behind curiously. Almost like a caretaker or a babysitter.

So why weren’t there any with him this time? Why was the merman here at the beginning of the season instead of a week or two in? “Do you not have any fry you need to be looking after?”

Instead of a laugh, or a smile, or anything that could have perhaps been natural to Pure Vanilla’s personality… The merman froze where he was swimming beneath the boat. Quietly looking up at him with wide eyes and his mouth open in a silent gasp. He looked stupid like that and it made Shadow Milk angry.

Pure Vanilla wasn’t stupid, he was terrifyingly smart and dangerous. Not this meek, surprised little thing that he looked like right now. Shadow Milk hated it. How dare he look so surprised, so gentle and so meek. If Shadow Milk wanted a specimen that was weak like this, he would’ve gone to his cousin’s farm.

“Well?” Shadow Milk kicked at the merman again. He was too far away to actually get a hit on Pure Vanilla, but it was more so just to get his point across. “Are you going to answer or are you going to sit there looking like a stupid little clownfish? Maybe I should change your designation to that! A stupid, overgrown clownfish!”

Yet Pure Vanilla completely ignored his outburst, instead slowly swimming back up to the surface and to him. Gently placing his hands on the boat besides Shadow Milk and pulling himself up so that they were face to face. “I.. thought you did not like the fry.”

Of course this overgrown clownfish would think that. Mainly because it was true; he didn’t. They were annoying — constantly trying to get into his research and constantly trying to get things they shouldn’t have access too. It was a headache trying to get his phone back when one of the fry grabbed it out of his pocket. It was a nightmare when one of them managed to steal the knife he had in his cabin without either him or Pure Vanilla noticing until too late.

Shadow Milk despised the fry, but he needed to see them for his research. White Lily had been very particular about not letting the chance pass him by. Shadow Milk did not get attached to the few that he was able to catch a glimpse of when Pure Vanilla was distracted. Or the few that would accompany Pure Vanilla.

No, he really hated them. They made his job harder, they made researching merfolk and their pods harder. They were annoying, they were aggravating and Shadow Milk would be elated if he never had to see them again. It would be easier to watch Pure Vanilla and his pod if he never had to see them again.

It would be easier to keep Pure Vanilla’s attention all to himself without those little monsters pulling Pure Vanilla away from him.

But he had a job to do, things to find out. To do that, he had to lie. “Of course I like them. They’re fascinating, just like you are.”

For what felt like minutes, all that could be heard was the soft movement of the waves. The distance call of other merfolk, mingling and perhaps doing things that he would never be privy to. But right now that didn’t matter — not with Pure Vanilla in front of him.

Those slitted eyes had dilated, almost like a cat who had just been given a treat. Shadow Milk could only imagine the purr that could pull itself from the merman’s throat. Had the thought of him liking their fry made him that pleased? Perhaps this would get him closer to-

Soft hands were yet again on his waist. Pulling him further and further off the boat until Shadow Milk was suddenly dunked into the cold ocean, right into Pure Vanilla’s embrace. Perhaps he should have acted on his fear finally when the merman acted without permission, but he didn’t. This wasn’t the first time the merman had pulled such a stunt so he was simply curious.

Instead of sitting on the boat together, Shadow Milk was now laid on top of Pure Vanilla’s chest, feeling pathetically tiny. It was unfair how large merfolk got, and how large Pure Vanilla was comparatively to other sized males. Instead of the smaller stature, he was bigger than the females even.

It was strange and annoying, especially now. Especially with one of Pure Vanilla’s hands coming up to his lower back and slowly beginning to weave its way beneath his pants. Shadow Milk rolled his eyes, reaching down and grabbing the pesky merman’s wrist to stop him.

“Absolutely not.” If he got caught letting one of the test subjects get frisky with him, it’d be the end of his career. He’s not risking his life’s meaning just for a too horny merman. “I will not be caught like that with you.”

“... You are worried about being caught?” Those words were carefully spoken from the merman, with the tiniest of head tilts as if he were a child being taught that actions have consequences.

He scoffed without much thought. “Of course I am!”

As soon as he finished speaking, as soon as he inhaled, Pure Vanilla suddenly pulled both of them beneath the water. Shadow Milk flailed, trying to push himself out of the merman’s grasp but it was far too tight on his waist.

“Don’t worry.” Pure Vanilla’s voice sounded so much louder underneath the water. A subtle rumble to his words, forcing Shadow Milk to look at him. “I will make sure we are not caught, then.”

The next few minutes felt like hours. He hadn’t known how fast Merfolk could truly swim until now; he had tracker records, but it paled in comparison to experiencing it. With his face pushed against Pure Vanilla’s chest, unable to see where they were going but feeling the bite of the current around them as he struggled to hold his breath.

He was brought up for air only if he slammed a fist on Pure Vanilla’s chest, yet never long enough for him to get a grasp on where they were. He could see that they were still by the cliffside, but not close to his boat. Each time, he was only given enough time to get enough air in his lungs again before Pure Vanilla pulled both of them back under and towards wherever they were going.

After what could have only been five minutes, they seemed to arrive. With Pure Vanilla gently raising both of them up and towards the surface. Breaching the water’s surface felt like mercy with how his lungs had begun to burn. Shadow Milk pathetically coughed into Pure Vanilla’s chest, struggling to remember how to breathe properly.

The merman gently rubbed his back with a hand, swimming forward until Shadow Milk’s back hit solid ground. He scrambled away from Pure Vanilla and onto the ground, fear burning through his veins and telling him he was unsafe.

But his logic knew otherwise — deep down he knew he was entirely safe with Pure Vanilla. It was the only reason he ignored the fear in his body, the desperate prey response to scream and beg for his life. A quick glance showed that the underwater cave the both of them were in was spacious, enough for more than fully grown merfolk. Another glance brought a nest like structure built by the side of the cave to his attention.

Seaweed, silks and other such fabric that he has no idea how Pure Vanilla got made it look almost beautiful. But the most fascinating thing to him, even through the fear, was the unknown plant life that decorated the walls and ceiling.

Vines wrapped around every surface besides for the ground, clearly cultivated to be such a way. There were fruits that he’d never seen before hanging from some of the vines, their odd color fascinating him. Not only that, but there were also what appeared to be little balls of light being produced by these strange vines.

Shadow Milk pushed himself to sit up to look at them all. He had completely forgotten about why and how he was here. It didn’t matter, it was just Pure Vanilla. He was safe with the merman, even if it was strange that-

“We are hidden now.” He barely had a second before Pure Vanilla pushed him down onto the ground, knocking the air out of his lungs for just a moment. “Will you accept me now?”

Accept- “What are you talking about?!”

Fear– reinvigorated– pulsed through his veins. Shadow Milk struggled to keep his breathing under control, to keep his voice steady. Everything about this should have been solely terrifying and yet… “I never agreed to anything! You haven’t even explained where we are!”

Pure Vanilla’s hands were gently holding his wrists, gently pinning them to the ground and Shadow Milk did nothing to stop it. Why didn’t he? Stars, why didn’t he?

“We are somewhere safe, somewhere that we will not be found. But-” The little fins on the side of Pure Vanilla’s head drooped ever so slightly. Shadow Milk despised how his heart tightened at the sight “- that doesn’t matter, does it? I thought you wanted fry. Did you not mean..?”

Wanted fry? He hadn’t even said that! There was no way that he said that! Not unless the merman decided to hear something entirely wrong! There was no way that he wanted children. Shadow Milk had meant that he wanted to see the fry, but Pure Vanilla took it as… as…

Pure Vanilla pushed himself between his legs. The only thing keeping the merman from falling on top of Shadow Milk was the fact that his wrists were still pinned. Shadow Milk tested if Pure Vanilla would let go of his wrists. There was barely any give but he knew that if he tried hard enough, Pure Vanilla would let go.

He could already feel the ever so slight twitch from the merman above him. Pure Vanilla’s sadness was clear and he was already starting to pull back. There was no “maybe” here. Shadow Milk had to make a choice. He had to make a choice on if he wanted this or…

…

Did he want this? Did he truly? This was a specimen. He was not meant to get attached, He was not meant to be contemplating having sex with it. Shadow Milk was never meant to keep coming back and keep demanding to be the lead researcher on this project. He was meant to be transferred into a new field, somewhere that suited him far better but he wanted to stay with the merfolk he found.

Shadow Milk wanted to stay with Pure Vanilla. To unravel his mystery himself and tear him apart scale by scale until there was nothing left but someone who belonged to Shadow Milk and Shadow Milk only. But this hesitation, his fear, was holding him back.

“Well?” It was hard to get the words out. Everything in him wanted to run away, to yell at him for tricking him, “Are you going to do anything or are you just going to be a big tease? I’m sure there's other pretty merfolk out there for me.”

The reaction was instantaneous. The hands around his wrists tightened painfully, those dilated eyes suddenly became slits again and a noise akin to a growl came from the stupid merman. The tail between his legs moved forward, pushing into his slowly hardening dick and making Shadow Milk gasp.

“No.” His hands were pulled together, held by only one of Pure Vanilla’s hands now. He shivered, feeling the merman’s newly freed claws begin to shred apart his clothing, not caring if his skin was scratched in the process. “No one else will have you.”

Fabric fell away slowly and methodically, gently pushed apart to reveal inch after inch of his body. Despite his clear jealousy, Pure Vanilla was dedicated to unwrapping him like a Christmas present. He couldn’t stop the weak shiver that rolled down his spine feeling the cool air of the cave around them.

The seawater left on Pure Vanilla’s nails seeped into the small cuts that his claws left on Shadow Milk’s flesh. The sting hurt and he knew he would have to disinfect them later but right now it felt… good.

Pure Vanilla’s hand gently pulled the scraps of his shirt and coat off of him, flicking them off to the side and towards that nest structure. Pure Vanilla’s fingers were trailing across his chest, gently touching every part of him and over the bleeding cuts sparkled across his chest. It almost felt reverent, like a priest meeting his god.

“You are beautiful.” Was this overgrown fish unable to stop talking? Shadow Milk gasped when Pure Vanilla leaned down to place a kiss against one of the small cuts, completely derailing his thoughts from the annoyance he felt. Sharp teeth grazed him, pushing against him but never truly piercing his skin. But it hurt just enough to feel like sparks were dancing through his veins. “How has no one else taken you, my dear Betta?”

When Shadow Milk tried to respond, to bite back and scold him for such a silly nickname, the merman gently took one of his nipples into his mouth. All of his venom fell out of his mouth, strangled curses and gasps were pulled out of him and he despised how weak he sounded like this.

Instead of being offended, instead of chastising him for his behavior, Pure Vanilla laughed against his skin. Such a feeling sent a shiver down his spine with the sparks of pain. He was careful with those sharp teeth, but not enough. The occasional prick of them was making Shadow Milk’s head spin.

“H.. Hurry up!” All he could do was glare down at the monster sucking on his chest like it would produce milk. He hated how he could already feel himself starting to get hard, how the burning need was starting to creep up on him. “Or is sucking like a suckerfish all you can do..!?”

Yet instead of scolding him, instead of doing anything that could have been reasonable, Pure Vanilla chuckled. He gently started to use his free hand to gently massage the part of Shadow Milk’s chest not currently in his overgrown mouth. Groping him, twisting his other nipple tightly…

Shadow Milk tried to kick feebly, tried to fight the hand restraining his wrists but the give that was there previously had vanished. With all of his weak fighting, Pure Vanilla’s grip only got tighter. The assault on his chest only got firmer.

He didn’t want to cum like this. But his merman seemed dedicated to making him. It didn’t matter how much he writhed, how much Shadow Milk begged him through gasps and whines to stop teasing him, Pure Vanilla did not change what he was doing.

Stars above, his chest wasn’t even that sensitive normally! Yet every touch, every lick, was sending sparks across his body and making Shadow Milk have to bite down moans forcibly. He wasn’t this pathetic but this stupid Merman was doing something to him and he hated it!

The hand groping him finally began to move. It trailed down, gently teasing the skin it touched as it moved. Somehow that act was even more lewd than the fact Pure Vanilla was literally sucking on his nipple like he could produce milk.

His pants were ripped apart with the flick of a claw, his boxers were left in a similar state swiftly thereafter. The first moan of the night finally crawled out of Shadow Milk’s throat when a large hand wrapped around his cock.

If that hand had moved at all, he knew he would’ve cum on the spot. But instead Pure Vanilla suddenly froze. Relief flooded him when the mouth around his chest finally popped off and two very surprised eyes met his own.

“You are already unsheathed?” Shadow Milk had no idea what this idiot was talking about. “Ah. Then I must have misjudged how close you were. My apologies, my dear Betta.”

His hands were let go but that was barely a blessing. Pure Vanilla suddenly picked him up, making Shadow Milk flail and latch onto his neck just to keep some stability. “HEY! What are you doing, you overgrown fish!?”

Pure Vanilla chuckled gently, placing a soft kiss onto his lips. Shadow Milk wanted to pull away but… Perhaps he leaned into the kiss, feeling those sharp teeth against his tongue. He willingly ignored that Pure Vanilla pulled them both back into the water, that both of them were moving towards something.

He did not ignore when Pure Vanilla suddenly leapt out of the water with him still in his arms. Shadow Milk screeched as the two of them landed in that nest structure, with Pure Vanilla taking the blow of the land instead of Shadow Milk. The position they landed in had him straddling the merman’s tail, completely exposed to his gaze and hands.

“Simply bringing you somewhere more comfortable, my dear Betta.” Pure Vanilla was on him again, hands gently tracing his skin and leaving goosebumps. “After all, if you wish to have fry I must make you as comfortable as possible.”

He scoffed, sitting down on the tail he was straddling properly. If he was going to be in this position, he may as well get comfortable. The stupid overgrown fish beneath him smiled, placing a kiss on Shadow Milk’s forehead. One of their hands intertwined in gross affection and Shadow Milk scoffed.

“Well? Are you going to hurry up?”

“I will, but I haven't unsheathed yet. I apologize-”

“Tch. Do you need help or something? Awww, do you have a problem getting it up with your size?~” he couldn’t help the teasing, the mocking laugh. It felt so amusing to see Pure Vanilla finally faltering in something that surely he would’ve had an advantage in.

Seeing how his face darkened in what must’ve been annoyance made Shadow Milk’s blood pulse in amusement, and perchance the slightest bit of anticipation. It could only lead to good things if he got this dumb clownfish annoyed enough to begin moving faster. This slow pace was awful and disgusting.

Pure Vanilla moved their intertwined hands down towards his tail. He wanted to scoff at such an action, willing to jerk himself off but instead his hand was placed on Pure Vanilla’s tail. Shadow Milk scoffed, moving his hand to try and stop with the useless affection. But when he moved it, he felt it.

… The tiniest little slit between Pure Vanilla’s scales. The tiniest bit of fluid that wasn’t seawater. Something soft, something warm. His breath caught in his throat and all of his previous annoyance vanished in moments. Shadow Milk’s curiosity took over him, gently pushing against the slit he could just barely feel.

It split apart beneath his index finger and thumb. The fluid he felt before seemed to gush out with the movement, coating his fingers in its warmth. Pure Vanilla’s little gasp went unnoticed and uncared for. His focus was entirely on the slit in front of him that seemed to just keep getting bigger.

The more he pushed it apart, the more was revealed to him. The slit was roughly 11.25 inches long and Shadow Milk had no idea how wide it could go. He could see a pretty red inside of it, not blood but… Ah, this was his vagina wasn’t it?~

His curiosity took over him. Instead of just pushing the slit apart, Shadow Milk pushed a few fingers inside. Pure Vanilla’s strangled gasp was not unnoticed. If anything, it emboldened him further. Shadow Milk urged his fingers deeper into the strange, velvety slit.

It reminded him of a cunt, with its warmth and twitches. Every little brush of his fingers was met with the velvet walls around him twitching or getting tighter, with Pure Vanilla quietly trying to keep moans to himself and his gasps quiet.

A sweet, almost tangy, scent came to him next. The urge to lean in, to begin licking at the slick that was coating his fingers and leaking out of the slit was strong. But he wasn’t even done feeling it. Tasting it could wait for later.

With a tentative push, his entire hand was engulfed by the slit. It was fascinating how it twitched and clenched around him, almost trying to pull him in deeper. Shadow Milk obliged, wanting to know what was deep inside of it.

“M-My Betta-” Pure Vanilla’s voice was shaking, and so was his entire body. Shadow Milk barely even cared, too dedicated to slowly pushing his hand deeper into the slit that was devouring his arm. It was almost hypnotic watching his wrist disappear inside first, followed by the rest of his forearm. “Sl-Slow d-hhn..!”

He didn’t slow down. If anything, the helpless beg for him to slow down made Shadow Milk go faster. Practically shoving his entire forearm inside in one fell swoop. Pure Vanilla’s sudden and violent moan was timed perfectly with his hand hitting something hard inside of the slit.

Gently, he wrapped his fingers around it. The cock in his hand twitched when he ran a thumb over the tip and Shadow Milk was rewarded with another startled and shameful moan from his precious, silly merman.

A small smile found its way to his face. A cruel, sadistic smile. He gently rubbed the tip, adoring the weight in his hand and how it twitched. If his silly little merman’s cock needed to be guided out then Shadow Milk was happy to guide it. All it needed was a little bit of rubbing, a tiny smidge of encouragement.

Slowly he lowered his hand further, trailing down the long shaft and teasing it with soft touches. The reactions he was graced with were almost sinful, addicting even. Pure Vanilla had raised a hand to his mouth, muffling the noises falling from his lips and struggling to hold back his aborted thrusts upwards into his hand.

It was pathetic. Shadow Milk loved it. He wanted more.

“Come on.” He grabbed as much of Pure Vanilla’s shaft as he could, slowly pushing himself backwards so he could lean down towards the slit and get his face closer to the heat. “Why are you hesitating? Oh, are you scared?~”

He placed a kiss to the rim of the slit. It was just meant to tease Pure Vanilla but he could feel the response almost immediately. The cock he was holding suddenly pushed forward, the way that Pure Vanilla gasped and had to use one of his hands to hold his hips down.

Better yet, the taste of the slick that was left on his lips was beautiful. Sweet like sugar but with the tanginess of an orange. Perhaps even an undertone of shellfish. Shadow Milk found himself kissing it more, slowly and calculated just to get more of that addicting taste.

Kissing wasn’t enough. It didn’t give him enough of the slick that was quickly becoming one of his favorite things to drink.

Without hesitance, He pushed his tongue into the slit alongside his arm. The flavor that had been an echo on his lips bloomed in his mouth and Shadow Milk pushed his mouth further in, trying to get more of it. He didn’t care that Pure Vanilla was moaning helplessly above him, begging him to slow down and be gentle.

It didn’t matter. Not with the way his merman’s body was responding so sweetly to him. The cock in his hand was already starting to push itself out, gently guided by his hand. Pure Vanilla’s slit was producing so much slick that he couldn’t be starved even if he wanted to be.

A shaky hand wove itself into his hair, grabbing him tightly and trying to pull him away. Shadow Milk defiantly pushed his face further into the slit. It didn’t matter if this was all he could taste or smell now. He needed more of it and he would devour it until the cock he was guiding out finally met his mouth.

“Pl-Please-” Pure Vanilla was whimpering. It sounded so sweet and he wanted to hear more. “I need- Oh Sacred Sea- I need you-”

Perhaps he wasn’t being pulled away. A small smirk came to him through the amusement and satisfaction. He was the one breaking this oh-so-strong merman apart, he was the one that was going to ruin him. Shadow Milk truly wondered how his lovely little idiot merman would feel against his dick.

If he felt this good around his arm and tongue, just imagining how it would be around his dick was making his head light. The pulsing heat, the addicting taste… Oh he would ruin this merman and make him come crawling back to Shadow Milk every spring just for another taste of this.

The tip of Pure Vanilla’s cock finally touched his lips. With little hesitation, he opened his mouth just enough to wrap his lips around it and begin sucking it. The vague salty flavor wasn’t as good as the slick from the slit, but it was good enough.

Inch by inch, Pure Vanilla’s cock was revealed. He watched with interest initially, smug and amused. Then that smug amusement faded away into surprise. Another one was emerging with the first, gently rubbing against his nose and annoying him immensely.

… He had his hand wrapped around that one, not the one in his mouth.

Shadow Milk popped off of the tip of the lower one swiftly. “You have two?!”

“... Sh.. Should I not?”

“Wh- Of- What purpose does two serve?!” He did his best to keep calm through his voice but there was an odd sense of fear and interest coursing through him. They weren’t small by any means and they were both still emerging… Already twelve inches out and still emerging.

Merfolk were large; the size should not have surprised him, but perhaps he did feel scared seeing how thick and long they were. It’s not like they were going inside of him! If even one of them went inside of him…

He wouldn’t survive. There would be no way he could survive having them inside of him. But… But the thought… The thought of even one of them being inside of him, stretching him apart and ruining him…

…

It-... It was for research. Nothing more.

Shadow Milk let go of the cock in his hand, pulling his hand behind him and pushing two fingers inside of himself. To muffle the moan that came with such an action, he wrapped his mouth back around the tip of Pure Vanilla’s bottom cock. He had to stretch himself quickly.

The hand in his hair tightened again when he did. Pure Vanilla’s moans filled the cave sweetly as Shadow Milk took the cock in front of him in his mouth — at least, as much as he could. It wasn’t a lot, all things considered, but it was enough to keep his focus as he continued to stretch himself out.

It wouldn’t be enough – stars – he knew it wouldn’t be. He almost wanted it to hurt and make him cry. He wanted to know what this kind and considerate merman would do when he writhed, when he sobbed for mercy. Would he stop? Would he be shoved further down onto the cocks until he was plugged full?

… Fuck.

Shadow Milk pulled his fingers out of himself and took his mouth off of Pure Vanilla’s cocks. Both of them breathed in tandem, gathering themselves for just a precious moment before they continued.

The first one to move was Shadow Milk. Pure Vanilla was swift to follow, both of them seemingly having the same idea. Large hands grabbed his hips as he pulled himself up to the tip of the lower cock. He had wanted the upper one, but Pure Vanilla practically manhandled him to the lower one.

“Careful.” A thumb began to rub circles into his hips. Shadow Milk scoffed and reached down, getting the tip properly aligned with his hole. The anticipation made his body feel cold, made bubbles boil in his blood. “We have a long night.”

He clicked his tongue and pushed himself down slightly. The bravado he had just felt cracked ever so slightly when he felt it begin to push inside. It felt so much bigger than it should have been… “Shut up..! I don’t need your worry, just hurry up!”

“Of course, my Betta.”

Perhaps he shouldn’t have said to hurry up. Shadow Milk hadn’t thought about it, more angry at the obvious care. The hands on his hips got tighter, holding him firmly before practically shoving him down onto the cock pushing against him.

His wail of ecstasy was pathetic. It echoed in the cave and back into his ears, making him have to listen to it over and over again. One moment he was empty, the next he was so full it felt like he was going to burst. There was so much more inside of him that he thought there should have been.

Surely the rest of Pure Vanilla’s cocks had unsheathed when he thrust Shadow Milk down. His shaky breaths felt so disgusting. If his mind wasn’t trying to keep itself together, he would’ve covered his mouth to try and muffle himself.

It felt like his body was so far away, unable to be moved. The sudden pleasure that had engulfed him was ebbing away slowly as he sat there, aching on his merman’s cock. He felt pathetic for the slight shake that was in his limbs, engulfing his body. 

“Is this what you wanted, my dear?” Pure Vanilla leaned in, gently nipping at his neck and Shadow Milk could do nothing but gasp and raise his shaky hands up to the merman’s chest. “You feel so good…”

He wasn’t even given a chance to try and pull together a sentence, or even his thoughts. Pure Vanilla was already lifting him up, mercifully only halfway, and pushing him back down roughly. He felt like a toy in the hands of the merman and somehow it made him even more turned on.

Stars above, he was just a toy, wasn’t he?

He- he could barely think already. Just trying to move his body in tandem to Pure Vanilla’s guided bouncing was taking up all of his attention. There was barely a moment for him to try and muffle his noises, to try and beg for Pure Vanilla to go slower.

They weren’t even moving that fast, not yet. But it still felt so overwhelming and like he was going to be torn apart at the seams. All of the words he wanted to use fell away into pitiful little moans, into pathetic wails. No one else could hear them yet he felt so ashamed of the noises falling out of his mouth.

“So beautiful..” Pure Vanilla was whispering into his neck. Despite all of his screaming, all of his moaning, Shadow Milk could hear him perfectly. “You are so perfect for me. You’re taking me so well…”

The praise shot right down to his cock. Right into his ego. Even in this state, Shadow Milk found himself preening. Of course he was good — there was nothing he wasn’t perfect at. Even if it was bouncing on a stupidly large cock that Pure Vanilla was praising him for.

“You’ll look so beautiful with my eggs..”

With his-

The thrusting got faster without warning. Shadow Milk helplessly fell forward into Pure Vanilla’s shoulder, wailing in the endless pleasure that was engulfing him. It felt like there was nothing he could do anymore but give in. Pure Vanilla was so dedicated to giving it to him and he…

He shakily raised his hands off of Pure Vanilla’s chest to wrap around his neck. With shaky, uncoordinated movements, Shadow Milk pulled the stupid overgrown fish into a kiss. It didn’t matter that it was more teeth and gasps than anything else, it was still so good.

It shut up Pure Vanilla’s praises too. He didn’t need to be reminded over and over again that he was so good for taking this stupidly huge cock. Shadow Milk didn’t need to be reminded that he looked beautiful completely and utterly blissed out on this stupid merman’s dick.

It was more for himself anyways. It was easier to not fall apart when he had something else to focus on than the thrusts that were getting faster. It was something better to do than having to focus on how deep he was being pierced, and how disgustingly good the pain felt.

Stars, it hurt so much. It hurt so much and Shadow Milk knew he was going to cum from the pain alone. Every thrust was sending electric sparks down his spine and throughout his body, making him dissolve. The raging fire beneath his skin wasn’t enough to quell the pain, but it was enough to make it consume him.

…Pure Vanilla was a good kisser. It disgusted him. They’ve never kissed before, so it meant that he had experience. Did he do this to other merfolk? The sole idea of it made Shadow Milk angry. He would ruin this monster for other merfolk. Make him come crawling back again and again to him and no one else.

Two more thrusts and Shadow Milk finally fell apart. He broke apart their kiss just to moan into Pure Vanilla’s chest, his climax having crept up on him and wrapped around his neck to strangle him. Pure Vanilla didn’t once stop moving him, treating him perfectly like a toy and making him feel so overwhelmed.

It was perfect.

But perfection does not last long, and finally Pure Vanilla stopped moving him roughly about halfway on his stupid dick. Shadow Milk sat there, breathing heavily and trying to just pull himself back together before they continued. He hadn’t even gotten Pure Vanilla to cum yet! What nonsense was this?! He had Shadow Milk make a mess between both of them, his cum splattered across both of them and-

“Breathe carefully, my dear Betta. You can do this.”

And something was pushing against his entrance from within Pure Vanilla’s cock.

Panic overcast any and all pleasure he felt. It wasn’t big but it certainly wasn’t small. Maybe the size of his fist, not Pure Vanilla’s. It was pushing against his entrance insistently, trying to breach and struggling to get inside.

It hurt, but most of all it felt good in some sick, perverse way. “It won’t fit!”

“It will.”

“No it wo- AHN!”

Pure Vanilla pulled him down ever so slightly, spread his legs just enough with his thumbs, and the round object pushed into him. It wasn’t perfectly round – more of an oval shape – but it was pushing inside of him, further and further until finally it was…

Another one was prodding at his entrance before he could even think about how it felt to have the first egg inside of him. The second one went in smoother than the first, but it left him gasping and writhing.

“Shh..” A hand left his hips, gently trailing up his side, across to his chest and neck and finally settling in his hair, wrapped around the messy bun he still had. “You need not hide your enjoyment, my dear Betta.”

Shadow Milk’s head was pulled back gently, away from his merman’s chest. All of the noises he had muffled were forced out into the open and he had to accept that he was moaning from the eggs being pushed inside of him. “There you go, just like that. You’re doing so well for me.”

A third one was pushing in. The second one hadn’t even joined the first one yet! But it didn’t stop. No, it just kept going.

“Almost done.”

The second one was laid in him just as the third popped inside. Shadow Milk mewled pathetically at the feeling, unable to control his noises. He felt so pathetic, so vulnerable. He couldn’t look down, he couldn’t see if there was a bulge in his abdomen with his head being held back.

His arms felt useless, barely able to hold onto Pure Vanilla’s neck to keep himself steady. It should have hurt, feeling a fourth egg follow quickly behind the third, but it didn’t. It felt so good, the pain nearly didn’t exist anymore.

“Two more. You’ve done so good for me, my dear Betta..”

He was going to cum. Fuck- no, he couldn’t cum like this. It- he was above this kind of pleasure! No, he couldn’t debase himself because of just some eggs and praise! That would be humiliating! Moaning was bad enough as is…

But it was creeping up on him. The feeling was so strange, so good. It felt like he was being pulled apart and woven back together into the shape of someone who couldn’t get enough of it. The creeping thought of begging Pure Vanilla to stay like this forever, to be pumped full of eggs over and over again was terrifying him.

It- it had to be just because of the overwhelming pleasure.

The fourth was laid in him and the fifth and six followed swiftly thereafter. Both of them decided to travel at the same time, pushing deeper and deeper into him, hitting all of the right spots and sending stars dancing across his vision. He was so close, horribly close. He couldn’t-

Pure Vanilla gently kissed his neck. “Good boy.” Almost as if to enunciate his words, Shadow Milk was bitten with all of those sharp fangs. His flesh was pierced and the pain bloomed throughout.

He snapped. The cord that felt like it was holding him together, keeping him from cumming snapped. Shadow Milk wailed into the open air, his vision going fuzzy and a piercing ringing sound engulfed his ears. He wasn’t even able to come down from the high properly, not with the two last eggs finally being placed inside of him.

Shadow Milk felt like he could barely breathe. He was so full like this, it was almost too much. Pure Vanilla let go of his neck gently, cleaning it up with his tongue. He shivered at the feeling, almost oversensitive despite nothing truly being touched.

“So good for me…” Such soft words were accompanied by his hips being raised, and finally pulled off of Pure Vanilla’s stupid cock. Shadow Milk whimpered at the action, trying to ignore the echoes of true oversensitivity. “But you can still keep being good, right?”

He was lined up with the upper cock’s tip. Renewed fear shot through him, there was absolutely no way he could do this again! He tried to speak up, he tried to move and tried to do anything but it was too late. By the time he tried, Pure Vanilla was already sinking him down.

A shattered, broken moan left his lips. All of the composure he had barely managed to wrangle together shattered apart right then and there. It hurt – the oversensitivity was driving him insane – but Pure Vanilla kept pulling his body down.

It felt like hours were passing by, with every inch of the cock inside of him pulling him apart and leaving him in agony. It should have made him unhappy, it should have killed any and all arousal he felt, but instead the open disregard for how he felt made him more aroused. It was disgusting, Shadow Milk knew a lot of his tastes were, but this one was the lowest he’s found so far.

He was nothing but a toy in the arms of this merman. He was nothing but something to be bred. For some reason, that entire thought made him shiver, made his helpless moans stutter and his overspent cock twitch.

He was pathetic. He was pitiful, disgusting and deplorable. But Shadow Milk was being loved by Pure Vanilla in every meaning of the word. To be loved is to be changed and he was changing painfully. He could already almost feel the addiction starting, the unending need to be used and destroyed like this over and over again.

Pure Vanilla was at least merciful when he bottomed out and gave him a moment to adjust. The eggs inside of him were pushed apart, rubbing him in so many different ways with Pure Vanilla’s stupid, stupid dick piercing him. Why did it have to be so big..?

“You asked why I have two...” The hand in his hair let go of him, trailing back down towards his hips and instead coming to rest on the bulge that was formed through his body. Shadow Milk shivered feeling it, hating the way it felt good. “But I’m sure you know, don’t you?”

“Move..!”

“Not until you answer me.”

This overgrown fish..! How dare he do this now! Of all the times for such a game, for such a punishment it had to be now. Wasn’t he good? Shadow Milk would skin him alive, make him regret torturing him like this and-

“It’s.. It’s to guarantee fertilization… of your eggs..”

“Good boy.”

He was finally lifted up again by his legs. Shadow Milk strangled a moan in his throat, feeling the eggs move inside of him as Pure Vanilla’s stupid dick pulled out of him. There was no more room for thinking, not past the painful oversensitivity and the soul consuming ecstasy.

Pure Vanilla practically dropped him back down, punching the air out of his lungs with a single thrust. He didn’t bother to keep his mouth shut – not when he knew Pure Vanilla would just make him be vocal again. This bastard probably got off to the sound of his voice.

Fuck. He might be getting off to the sound of his own debased voice. Fuck!

The noise of slapping skin, the cries that fell out of his mouth, were all reverberating around the cave and right back to him and Pure Vanilla. It should have disgusted him, it should have made him want to stop.

Yet it didn’t. Shadow Milk could feel the way that Pure Vanilla wasn’t as unaffected as he appeared, he could feel the ever so slight twitch of the cock inside of him with every guided bounce, with every moan of his. He could hear the soft little growl, the quiet praises that were desperate for his attention.

“So good for me.”
“You’ll never have to worry again.”
“You’ll be a great mother..”
“So pretty..”

All of the praises went straight to his ego – and cock – embarrassingly swiftly. Pure Vanilla had completely forgone using his name, instead dedicated to calling him the “mother of their children”...

It shouldn’t have been so arousing. It shouldn’t have been and yet it was.

“They’ll grow up perfectly with you there.”
“I can already imagine their laughter..”
“The perfect mother for our children..”

It should have been revolting. It should have been. But the idea of being knocked up by this damn overgrown fish, having to carry these eggs, was horrifyingly good. He wasn’t thinking right, and all of these whispers given to him between thrusts were messing with his head.

This was just a fluke- it had to be. He couldn’t be actually thinking this too. These thoughts had to be influenced from the overgrown fish still bouncing him on this ridiculously big cock. It felt so good, it felt so good… So very good…

“Mor’... Please..!” He needed more. He was so close. Shadow Milk needed more. He was so close…

“Shhh.” A soft kiss was placed on his lips. Shadow Milk pushed himself forward weakly to keep kissing his stupid overgrown fish. Pure Vanilla indulged him, letting him try as much as he could in this state. It was more mouthing, more the idea of a kiss, than a proper one. But it was the best he could do.

He was bounced faster, harsher. Everything inside of him felt like it was on fire in the best and worst ways. Every thrust tore him apart and remodeled him into something that was perfect for Pure Vanilla. He almost didn’t want to be, but it felt so good to just collapse into this new role.

A soft tongue was pushed into his mouth, exploring it and Shadow Milk was helpless to stop it. Pure Vanilla explored his mouth while he could do nothing but let his body be used like a toy, a perfect little thing for Pure Vanilla to fuck into.

He was so close. Could he even cum again? He didn’t know. He wanted to, he wanted Pure Vanilla to just cum already. Shadow Milk knew he was close, he could feel it with the frantic thrusts and the subtle little twitches.

So close… So close… So close so close so close so close-

Shadow Milk cracked first again. A dry, pathetic and unsatisfying climax. He was so sensitive, it was all too much. He couldn’t think, could only feel and focus on the thrusts and the eggs inside of him. It was so much, too much.

But the cruel, oversensitive torture didn’t last long. As if Pure Vanilla had finally decided to listen to him, Shadow Milk was forced deep onto his cock, forced to sit there as a soul-consuming warmth exploded inside of him, covering him in a deep white that he almost wished would never come out.

It felt like he was floating, it felt like he was separated from his body and just a soul that could only observe the world around him. Shadow Milk didn’t know what to focus on feeling, what to be right now. All he could do was sit there and let Pure Vanilla fill him up, feel the way it touched him and.. and how it was…

Fuck. The eggs. He could feel them pulsing.

…

Pure Vanilla’s hands were gently rubbing him, gently caressing every part of his body that they could. Shadow Milk was fighting to breathe properly, to keep himself together but it was so hard. It was so hard with the cock inside of him slowly pulling out without him even having to move.

It was so hard when Pure Vanilla was still whispering words of praise into his mouth, forcing him to practically devour it and accept them. Shadow Milk couldn’t deny them, couldn’t push them away. It was painful, it was… nice.

Ever so slowly, he was leaned forward into Pure Vanilla’s chest. Soft hands gently pulled out the bun his hair was in, letting it all fall down comfortably. It felt like he was being treated like a princess and for once Shadow Milk didn’t mind it.

“Sleep now.” He felt warm… “In the morning I'll make sure that you feel just as good as before.”

…

What a terrifying statement. Shadow Milk didn’t care. His eyes fell shut naturally and he let Pure Vanilla lull him into sleep.