#mer!baku x mer!deku

[pinkykats-place]

BakuDeku Mermaid AU

Fics w/ Multiple Chapters

AO3 Recommendations

Mer Baku x Mer Deku

Disclaimers!

None of the stories linked are mine.

All contain mature content.

Art not mine - credit to @fihella

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

Sunken Treasure by @queen-swagzilla

Summary: Izuku and Katsuki are mermen in the same pod. They're best friends—partners in crime—and they do everything together. They even take up jobs guarding the pod's territory together.

When Katsuki presents as an alpha, nothing changes. Izuku expects that nothing will change when he presents, either. But then, he presents as an omega. At first, he doesn't mind. Why would anything change? Besides, maybe now that he's an omega, Katsuki would consider courting him.

But instead, Katsuki all but vanishes.

Complete | 4 Chapters

Rated - Explicit

The Tides They Are A-Changing by @mjbunnyluv

Summary: When Izuku gets separated from his pod during the annual migration to the breeding grounds, he must rely on a strange mer to help him find his way home. Notorious for rejecting any and all courting gifts, the young mer is confused when he begins to develop feelings for the blonde stud. Fighting off feral mers, avoiding fishing nets, and oil spills, the pair grow closer, all the while trying to conceal their true feelings for one another.

Complete | 10 Chapters

Rated - Explicit

A Love Song from the Deep by MadameButtButt

Summary: His pod has always feared the Dragons, the alien clan that dwelled among volcanic vents of the deep, and with good reason. No one has seen one in generations, but Izuku heard stories of blind, listless things that drifted along the sea floor like ghosts.

— — —

Wherein Izuku is a curious merman, and his new friend is very fascinating.

Complete | 5 Chapters

Rated - Explicit

Trapped by jaegerackereri

Summary: Izuku knew he shouldn’t have followed that seagull towards the coast. He knew that’s where the humans were and he was told many a story of how destructive they could be.

But being just a little gup he had foolishly followed the pretty odd bird towards the land where sea meets sand.

And right into the hands of three exotic animal dealers…

Incomplete | 13/? Chapters

Rated - Explicit

Series: Breathe In by @contrarybee

Summary: Midoryia Izuku was born in captivity. He's never known the ocean.

His human carer Yagi-san tells him they're getting a new merman in the aquarium, one that they hope Izuku might like. Having been alone since his mother's death, Izuku is beyond excited to have a new mer around, but Bakugo Katsuki might prove to be too much. Or maybe he's just right.

3 Works | No Quirks

#1 is complete & 9 chapters

#2 is a one shot

#3 is complete & 10 chapters

Rated - Explicit

Forbidden by jaegerackereri

Summary: After the SharkMers went extinct, there only remains a handful of them throughout the ocean.

Adopted SharkMer Izuku is taken in by TropicalMer Inko after a traumatic situation in the reefs, and she raises him as her own. 15 years later he just can't get the idea of exploring out of his head. He feels like there is someone out there searching for him, another one of his remaining kind.

Incomplete | 24/? Chapters

Last updated June 2023

Rated - Explicit

[miscellaneous-bnha]

A list of Things I have Created (+ Things I Want to Talk About)

Everything you see here is a list of things I created while talking with @saint-eridell and will eventually write about.

Kiri and Baku shark bois (getting close to writing)

Naga Izuku (already written)*

Siren Todorokis + Dabi

WW Fatgum (already written)*

Water nymph Oboro ***

Jungle Cats Aizawa and Shinsou

Wild dog Mic

Wind spirits Iida and Inasa

Half frog Froppy**

Trickster Imp Ochaco**

Half-harpy Hawks and Tokoyami

—

* already written, but writing more

** I’m not too comfortable with writing for female characters yet, but I will get there one day! So please be patient 🙇‍♀️

*** yes, he is alive in this AU because Aizawa needs his emotional support cloud boi thank you

—————————————————

I know I said that I was going to write for Fatgum next, and I’m still working on that Rappa x Reader x Fatgum project, but Saint-Eridele had me thinking really long and hard about the shark bois and I fell in love with some of the stuff mentioned.

Things to be expecting soon from this:

Tiger Shark-mer Kirishima x Reader

Thresher Shark-mer Bakugou x Reader

Siren Shoto x Reader x Wind Spirit Inasa

More HCs for Naga Deku x Reader

—————————————————

My Ask Box IS OPEN

So, with that said, please feel free to send in asks ^^

As mentioned before, AUs are more of my strong suit, but I will write for canon-verse characters if I’m feeling particularly inspired.

With that said; my ask box is permanently open, but I will not always answer every ask.

I may hold on to some asks and answer them as I feel inspired, but I will NOT promise that I will answer them.

The more information you can provide on an ask (the AU, the character, if there’s a particular type of HC you’re looking for [i.e: slow burn, light angst with a happy ending, maybe some follow up with HCs I’ve already written {‘How would Gladiator Fatgum handle jealousy’ or something}, etc.], the type and gender of Reader [anxious/careless, short/tall, loud/quiet, etc.], smut or no smut) the better and the more it helps me write what it is you’re looking for.

I’m not saying I won’t look at the simple ones (‘Can I get some [insert character] headcannons?’), but usually I’ll answer those by talking briefly about the HCs that I’m already writing involving that character (and AU if applicable).

Yes, I know this is my blog and I should write for me, but sometimes I don’t even know what I want to write for me so sending in some detailed asks— even if they’re in 14 different parts— really helps me out a lot.

I think that’s all for now, but if there’s anything else that comes up later, I’ll be sure to open up another post to talk about it then. If you have any questions regarding any of these things, feel free to send in an ask! I’ll try to answer them as best as I can :)

[pinkykats-place]

BakuDeku Mermaid AU Ⅱ

One Shots

AO3 Fanfic Recommendations

Mer Baku x Mer Deku

Disclaimers!

None of the stories linked below are mine.

Some contain mature content. Read tags.

Art work not mine - from madambuttbutt {ao3}.

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

How to make you understand by Cadameo

Summary: Katsuki had a spear over his head, ready to protect his tribe from the unknown trespasser but all his fighting was stripped of his body when green scales and a blinding smile waved in his direction. He can't understand a word said to him but in his heart, he already knows he would mimic his way through the seven seas if it meant having Deku by his side.

Izuku calls himself a traveler, but that's as much as he can convey to a red-eyed blond mer that doesn't speak his language and gives him pretty gifts.

{One Shot}

Rated - Teen & Up

Mornin', Beautiful by mynameis152

Summary: There's a certain bit of bliss that comes from waking up to Izuku's face every morning, even more when the kids are involved.

{One Shot}

Rated - Teen & Up

fallin’ into the deep blue by xUnchartedDreams

Summary: The sea is beautiful, but.

What about eternity?

{One Shot}

Rated - General Audiences

angler and angel by mimocha

Summary: “Anglerfish! You- You’re an anglerfish!”

Said anglerfish mer pauses like he’s surprised to hear Izuku’s voice addressing him. He rises from his crouched position slowly, piercing vermillion eyes meeting Izuku’s shiny viridian ones.

He stares at him curiously as he asks, “I’m aware. And you’re an angelfish. Fuck are you doing, still hanging around here? Are you trying to be eaten?”

{One Shot}

Rated - Mature

The Reefer and the Shark by red_emerald

Summary: A school of fish rippled over Izuku like a glittering silver cloud. Delighted, he spun in place to feel the ribbons of current they made, and when the school cleared he came to a laughing stop — and froze, because there was a shark person floating a few short fin-strokes away, staring at him. He seemed just as surprised as Izuku.

They regarded each other in stunned silence.

--------

In which Izuku, a fragile reef dweller, meets Katsuki, a great white shark.

{One Shot}

Rated - Explicit

[pinkykats-place]

BakuDeku MerMay 2024 Fic Recs

archive of our own

Disclaimers!

None of the stories below are mine.

Few contain mature content.

Read tags. Check Ratings.

GIF not mine.

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

Lured by huliganships

Summary: Izuku had always been fascinated by the sea. When he was still a child his mother told him that her mother had been a mermaid who had fallen in love with a human. Because of that the sea favored their family. Izuku had never understood what his mother meant by that, not until he had grown up and discovered his gift.

Whenever he sang, the sea listened.

Mer!Baku x Semi-Human!Deku

One Shot | SFW

Tastes Like Fucking Lionfish by jonabenkku

Summary: Izuku’s neighbour finds an injured Merman by the shore. Logically he brought it to his home, and suddenly it’s Izuku's job to take care of the stunning creature in a bathtub.

Mer Baku x Human Deku

One Shot | SFW

The Mating Grounds by huliganships

Summary: The mating grounds were a sacred place. The old songs that all mer children listened to while growing up told them of its location, about the peace that prevailed there, and how it was the last safe haven for every wanderer. Lure singing had become rare over the years, but most pods still had one or two elders who were teaching the gift to the younger generation.

While Katsuki was sure he would never need to travel there, he hadn't been prepared for how it made him feel watching Izuku swim away from him to find a partner elsewhere.

Mer Baku x Mer Deku

One Shot | SFW

Love in the reef by Dantalia

Summary: Izuku is a pretty betta bearer mer, who is shunned by his fellow mer because he is a male carrier. A rare second gender for males.

This year marked another year he had to spend mating season alone and in pain Izuku thinks.
Enter tiger shark Katsuki who takes an instant claim on the green mer and promises him a life time instead of a mating season.

Mer Baku x Mer Deku

One Shot | SFW

Find the feeding grounds by ContraryBee

Summary: Izuku is so hungry. The season is ready to change but he's unprepared. He's alone. He's wandering.

And Katsuki is the god's favorite: of course a beautiful, delicious, near-heat bearer would enter his territory, swim right into his hands. He's hungry too. Fucking starving.

mer!Baku x mer!Deku

One Shot | NSFW

Unwanted Gift by TigerLilies64

Summary: Prince Katsuki has been gifted with a merperson of all things. He's incensed that he would be offered such an inhuman gift, but rejecting it would threaten fragile diplomatic relations. So now he's got a chatty merman in his room that he never asked for. What is he to do?

Human Baku x Mer Deku

Complete | 4 Chapters | NSFW

His Freedom and His Fortune by s_the_queen

Summary: "He didn't say his name," she said, casting her eyes down. "He… he said you were friends. That he was looking for you. I made a mistake—" she broke off, a distressed cry at the back of her throat. Katsuki didn't care. His heart was racing. "I told him you made berth here to treat with another mermaid—a siren who fancied himself in love with you."

"Describe him," he spat. "Or I'll make it my mission to end your pathetic life."

She looked up at him, eyes sad. He didn't fucking care. "He had white hair and his face was weathered. He had unusual jewelry—a chain of clasped hands around his neck. His voice sounded like dry sand."

She needn't say more. He knew exactly who had his love.

Izuku was in the clutches of his greatest enemy—the pirate Shigaraki—the White Hand of the Sea.

-or-

Izuku, the siren who holds Katsuki's heart, has been kidnapped. Katsuki will do anything to get him back.

Human Baku x Mer Deku

One Shot | SFW

The Sea and His Possessions by ChickenAlfrado

Summary: Bakugou Katsuki lives a humble life as a young fisherman. Bringing his catch of the day to the local market to bring in money for himself and his family. Everyday, he has a ritual. Wake up, go fishing, go to the market, come home, sleep. After his father took ill, he had no choice but to take on the role as the bread winner for his household. Having just become an adult, he had no issue taking the family business onto his shoulders.

Until a certain terrible storm rocks his boat far from his comfortable ritual.

Human Baku x Mer Deku

One Shot | SFW

[pinkykats-place]

BKDK Mermaid AU Mer Bakugo x Human Deku

AO3 SFW Recommendations

Disclaimers!

None of the stories linked below are mine!

All are SFW … still check tags

Credit to @hotpotatopotat for the fan art.

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

Human Treasures by @kaligraphy

Summary: Mina convinces Katsuki to help two humans trapped in their sinking boat in the middle of the storm. Katsuki, for all his claims of disliking humans, seems to find one human rather pretty.

{One Shot}

Rated - Teen & Up

whirlpool by pinchingzuku

Summary: He still didn’t know how he, a mer, ended up being friendly with a human of all things. It still made his brain spin and his fins flicker in annoyance, maybe less than he would have liked, but still.

And definitely didn't expect to see him again, and again, and again.

{One Shot}

Rated - General Audiences

The sound of the waves by Ana_Writes

Summary: Love is beautiful, everyone knows that. Everyone sees it differently. For some it's the feeling, for others it's the person.

For Izuku? For Izuku it's the sound of the waves.

Being in love with a merman isn't normal or easy but Izuku knows he'll do anything to see Katsuki's face, feel his scales on his skin and hear the soft hum of the waves.

{One Shot}

Rated - Teen & Up

tides by kindaopps

Summary: A new lease of life, then, for this poor boy. 

A whim, nothing more. Katsuki’s good deed of the day. It’d be a waste, to let the life he’d saved slip away in a blink of an eye. 

Katsuki ignores the treacherous voice inside him that tells him that his whim had something to do with the dream-like, nebulous future that Katsuki saw in glimpses.

One Shot | SFW

Rated - n/a

Not Your Typical Tail by Cyberneticstar

Summary: The Little Mermaid AU where Bakugou takes the place of Ariel. And he's not falling for any of that 'love at first sight' or 'damsel in distress' bull shark shit.

Complete | 10 Chapters

Rated - Teen & Up

Sharks and ocean predators by @silverynight

Summary: He's ready to dive in, when he sees a very weird black and dark orange fin, it looks like a shark's. He knows sharks are not usually aggressive, but he doesn't want to upset it, so he decides to stay on the boat for a while, hoping it doesn't see anything interesting and decides to go away.

However, the shark doesn't go, instead it bumps into Izuku's small boat a couple of times until the green haired boy falls into the water.

Izuku closes his mouth and opens his eyes to see the creature and realizes that's not a shark but a merman; he's never seen one like him before. Uraraka's fin is completely different from his; from the waist down he looks like a black shark and the rest of him looks like a blond boy with red eyes, sharp teeth and well built body.

{One Shot}

Rated - Teen & Up

mer-made in heaven by Fangirl_on_fire

Summary: Over the next few weeks, Izuku kept returning to the cove. He brought a few gifts for Katsuki—slices of dried kelp, a pretty shell, things he had figured out mermaids often liked from his studies at the laboratory—but Katsuki never reacted beyond a slightly interested lift of his eyebrows. Still, Izuku was lucky just to have the attention of the most gorgeous person he had ever seen, mer or human.

As if it weren’t enough that Katsuki was devastatingly handsome, he was cute, too, with the way he scrunched his nose up when the sunlight hit his eyes or he idly splashed his tail in the water.

{One Shot}

Rated - Teen & Up

Tidal Wave by LoonyLoomy

Summary: When a young Izuku goes to the beach one day to find a boy with a lionfish tail, he's immediately enchanted. Katsuki is the coolest friend: confident, talented and bursting with amazing stories about life underwater. Little do the boys realise, however, that a mistake can change everything in the blink of an eye.

Incomplete | 6/? Chapters

Last Updated 2020 

Rated - Teen & Up

[pinkykats-place]

BakuDeku Fic Recs MerMay 2023

archive of our own

Disclaimers!

None of the stories linked below are mine.

All are SFW … still check tags.

Art not mine … by @fihella

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

Disaster is My Love Language by @mjbunnyluv

Summary: Izuku, a marine biologist, rescues a struggling merman caught in a net. Once pulled out of the water and brought to the wildlife rehabilitation center where he works, it appears the mer's injuries are worse than he thought. While aggressive and furious that he has been forced into captivity, Katsuki slowly comes around to the idea that being taken care of isn't so bad.

Mer!Baku x Human!Deku

{One Shot}

Rated - Teen & Up

Against the Course by bundie

Summary: Bakugou Katsuki is an expert on mer and he's sworn to protect them from pirates and poachers. He joins a pirate crew to sabotage their hunt and comes across the most beautiful mer he'd ever seen. He's forced to drastic measures to protect Deku, even at the cost of his own life.

Mer!Deku x Human!Baku

{One Shot}

Rated - Teen & Up

Sharks and ocean predators by @silverynight

Summary: He's ready to dive in, when he sees a very weird black and dark orange fin, it looks like a shark's. He knows sharks are not usually aggressive, but he doesn't want to upset it, so he decides to stay on the boat for a while, hoping it doesn't see anything interesting and decides to go away.

However, the shark doesn't go, instead it bumps into Izuku's small boat a couple of times until the green haired boy falls into the water.

Izuku closes his mouth and opens his eyes to see the creature and realizes that's not a shark but a merman; he's never seen one like him before. Uraraka's fin is completely different from his; from the waist down he looks like a black shark and the rest of him looks like a blond boy with red eyes, sharp teeth and well built body.

Mer!Baku x Human!Deku

Complete | 2 Chapters

Rated - Teen & Up

to the Touch by meteormind

Summary: With those huge green eyes beading with pearly tears, he looked about as threatening as a limpet with its shell torn off. Katsuki squinted at the waving tentacles, wondering how they tasted, remembering the crunching chew he'd had the chance to appreciate the rare times he'd cornered a few of those shy creatures.

Then he remembered that he couldn't eat mer. It was frowned upon. Katsuki glared down at the merboy, his excitement fading into disappointment when he realized he probably wouldn't even get to punch something. "The hell are you lookin’ at?"

"S-sorry! It’s not-I wasn't trying to spy on you or a-a-anything!" the boy said at last, throwing his many squiggly appendages about his face. "I-I-I—"

Oh. It was a loser!

🦐 pistol shrimp katsuki x dumbo octopus izuku 🐙

{One Shot}

Rated - Teen & Up

Wild on the Beach by EpicKiya722

Summary: Rumi and Izuku, a pair of merpeople raised by caring couple Inko and Hisashi, find themselves interested into some new humans that arrived on the beach. The interest is very mutual.

Mer!Deku x Human!Baku

Complete | 3 Chapters

Rated - Teen & Up

𓇼Collectors Item𓇼 by BeanQueen_29

Summary: Mer!Izuku X Human!Katsuki

It was by chance that Katsuki had caught wind of the markets having collected a creature they coded as a "Sea Naiad" or “Son of Nereid”.

He was just closing in on a deal of his new purchase of one of the rarest fish found in Japan waters; The Elusive Oarfish, otherwise known as ‘Ryugu no tsukai’.

Originally, he only heard the name "Ryugin Decedent" getting thrown around, but after making his investigation of this new rarity of the sea the markets seem fond of keeping hidden, the more intrigued he became. Especially when the names started to become eerily specific.

A Sea Naiad.

They caught merfolk.

And as a collector of Legend-Becoming (going extinct), it would be unwise to not let such an absolute specimen slip through his fingers and into the hands of another greedy buyer.

— — —

Or Katsuki, a man with unbelievably deep pockets, is a collector and a mermaid he later names Izuku is up for purchase. A lot of unexpected developments come between them, and it's more than just simple curiosity and admiration of each-other’s mind. But of the body too.

Incomplete | 3/? Chapters

Rated - Explicit

A completely irresponsible conservation effort by McAlli

Summary: Izuku fucks Mer Katsuki.

That's it. You saw the tags. You know what's in here.

Mer Baku x Human Deku

{One Shot}

Rated - Explicit

[pinkykats-place]

Mermaid AU Human Bakugo x Mer Midoriya Ⅱ

AO3 SFW Recommendations

Disclaimers!

None of the stories linked are mine

None contain smut - all are SFW

Credit to @novaneondream for fan art.

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

Shipwrecked by Withstarryeyes

Summary: When he wakes there is a man above him. He’s backlit by the sun, features blurred out by too much light, and Bakugou shifts upwards abruptly. The man slinks back, but lingers, hands outstretched as if he’s afraid of what Bakugou might do. In the background, waves crash onto the sand, and Bakugou turns, searching for his ship, for his crew. He screws his eyes shut, breathing quickening as he remembers the storm and the feeling of the deck on the waves. Something cool connects with his cheek and Bakugou opens his eyes, scrambling backward without thinking.

One Shot | SFW

Made To Be Held In Your Hands by BrandWhoreStarscream

Summary: Just a cute fic about Kacchan finding his soulmate when he's very young, a cute little mer he dubs Deku, but no one believes him about his fishy friend. Cuteness abound.

One Shot | SFW

the one where katsuki is a pirate by Kasplode

Summary: Katsuki and his crew take down an enemy ship, and Katsuki gets distracted by a certain mer.

One Shot | SFW

Fish Eye by sweetautumnwine

Summary: Izuku, a solitary merman, finds himself captured by aquarium staff and imprisoned in one of their laboratories; the man assigned to observe him, Katsuki, was on the boat when he was ensnared in the nets. As they grow to know each other more, Katsuki must decide where his duty lies, and Izuku must learn what his heart desires.

One Shot | SFW

Home is where the waves crash by tiredwrites

Summary: Izuku thrashes in his cage, the fins that line his large tail flare with a dangerous purpose. The claws his fingers taper into slice through the water and catch the light that filters into the clear water of the aquarium tank he's in.

His gills flare in irritation as he flips around, muscled tail ramming into the three-inch glass barrier with a thundering BAM!

Bioluminescent sacs under clear scales flare and glow, flashing a brilliant toxic green. The team that had brought the merman into the tank watch the mer flail and roar, flexing the powerful jaws that can often unhinge, like a snake.

{One Shot}

The King and Dad by Serah_chan

Summary: Alpha!Mer!Deku, King of the Seas, Nightmare of the Deep, and Sucker for Human Kacchan.

The King of the Sea doesn’t need a mate, but the second he lays his eyes on a feral looking blond teaching his cute little calf how to snorkel, the “doesn’t” turns into a “maybe”.

3/? Chapters | SFW

Last Updated Nov 26

Sand is Land and Sea Inbetween by Frost_or_Fire

Summary: Katsuki is by no means a marine biologist, really, and he knows that he could just walk away and act like he saw nothing. Act as if he didn’t see a half-human body laid across the late October sand while a black tail is still in the water, sorta concealed by the rolling waves that washed over the figure. He could just act like this is all just some dream that his subconscious cooked up for him to be put through to show how miserable he actually is.

But Katsuki fucking Bakugou is anything but a coward and a sick person.

----

Bakugou finds a Merperson on a beach and takes them home to help with their injuries, and possibly get more than he bargains for.

Incomplete | 8/? Chapters | SFW

Last Updated 2022

At An Ocean's Divide by that_enby_nerd

Summary: An AU in which Midoriya is a merman living near the kingdom of the Bakugo family, and a forbidden connection forms between the prince and a knight of the sea.

12/? Chapters | SFW

Last Updated May 2022

Save to Swim by sanjusangendo333

Summary: Izuku is out for a run, when he spots a blond man in distress in the river. He quickly strips off his shoes and clothes until he's barenaked to save him. But Katsuki is not in distress and nor is he a regular guy. He's one of the men from the elite diving unit of Japan’s coast guard who is in the middle of diving exercise.

Katsuki and his unit all agree that, ‘WOW! Izuku can swim really well and so fast!’ He'll really fit well in Katsuki's diving unit, they all say as Izuku is still in the water. But Izuku hurriedly excuses himself and swims away, because otherwise, they'll see the fish tail that his legs transformed into the moment he dived into the water.

Katsuki, of course, does NOT give up on trying to recruit him.

{One Shot}

Rated - Teen & Up

Wish by Darkshadow

Summary: Eight year old Katsuki goes to the beach only to spot the most beautiful creature he has ever seen, can he convince the merman to stay by his side even through times of struggle

{One Shot}

Rated - Teen & Up

Fish Eye by sweetautumnwine

Summary: Izuku, a solitary merman, finds himself captured by aquarium staff and imprisoned in one of their laboratories; the man assigned to observe him, Katsuki, was on the boat when he was ensnared in the nets. As they grow to know each other more, Katsuki must decide where his duty lies, and Izuku must learn what his heart desires.

{One Shot}

Rated - Teen & Up

What Lies Below by Anonymous

Summary: Momo screams at her father, she is a scientist! But mermaids must be real! She’s fascinated by the endless scientific possibilities. One day Momo meets another scientist with dreams like her, Iida Tenya. They devise a plan to conduct a voyage to a mysterious island, rumored to have merfolk living below. They struggle to gather a crew as many claim them insane.

Thus they gather Katsuki, son of the Queen, pro navigator, known for his brutish behavior. Kirishima, who spent his whole upbringing on the sea. Plus the two morons, Mina and Denki, as Katsuki claims.Izuku is a merman prince enamored by humanity, much to the dismay of Todoroki. Always worrying his parents, as he disappears to scavage the ocean depths with his best friend Ochako in search of human trinkets. The kingdom adores the Prince. Although some fear Izuku’s curiosity could be fatal.

Todoroki is the protector of the island and the mermaid kingdom below it. As King Toshinori’s powers weaken, Todoroki, a descendant of the Gods, becomes his apprentice. He aims to protect all those he loves yet Izuku makes it near impossible. Todoroki will not let the past repeat, humans are NOT to be trusted.

Read as their paths collide.

4/? Chapters | SFW

Last Updated 2020

[pinkykats-place]

BKDK Mermaid AU Mer Bakugo x Human Deku Ⅱ

AO3 NSFW Recommendations

Disclaimers!

None of the stories linked below are mine.

All contain mature content. Read tags.

Art work is not mine.

Note: If you read any of these stories and like them please let the author know with a kudos and/or comment!

A Salty Distraction by Viridian_Sunset

Summary: Deku has a shitty day at work and finds comfort in his mermaid friend.

{One Shot}

Rated - Explicit

One Fish, Two Fish, Half Fish, Marine Biologist by RandomFandoms65000

Summary: Izuku was ten years old when he met Katsuki aka a merman that the aquarium called Dynamight. As Izuku aged the merman never left the back of his mind it was one of the reason why he decided to become a marine biologist. He not only wanted to because of his love for salt and fresh water creatures, but to study Katsuki's species. Merfolk were rare and well the more they talked the more Izuku fell in love with the merman. Maybe he had always loved him.

Complete | 20 Chapters

Rated - Mature

Specks of Gold Against the Ocean's Waves by Serah_chan

Summary: While enjoying the light of the full moon, Katsuki Bakugou, an orange tailed merman, crosses paths with a handsome surfer with freckle littered cheeks. While he's not supposed to interact with the human, there's something about them that draws the merman to get close and ignore all boundaries.

“Huh, he’s kinda good looking for a human.” Katsuki muses, feeling the annoying itch of curiosity push him towards getting a better look. He wonders if he can observe him from down below as he takes on the waves, catch glimpses of him as he falls back to the water. Human eyes weren’t exactly the best anyway, so he shouldn’t have to worry about being seen... right?

Complete | 19 Chapters 

Rated - Mature

I’ve Got You, Stupid Human by GreenEyesSublime

Summary: The mysterious man swam the last few feet to the rock. Putting his hands up on the edge, he hauled himself out of the water with a flourish. Izuku watched in awe as first a toned, muscled chest emerged from the water and then a tight pack of abs followed by a dangerously sharp v-cut pointing downwards towards a...tail?!

— — —

Or, human!Izuku has been cleaning the beach for weeks and merman!Katsuki is tired of just watching. 

{One Shot}

Rated - Explicit

A Salty First Kiss by DarkMachi, Iwacakes

Summary: Izuku Midoriya's family beach trip went awry when an attempted act of heroism lets to an unexpected first.

Jumpcut to twelve years later: Izuku was struggling to stay afloat when his stepfather threw him a chance. What was meant to be a reprieve turned into something else entirely when he finds someone washed onto the beach. A memory he should have buried long ago, a kiss he could never forget, and a debt he could now repay.

Or.

What do you do when you have an angry Merman in your bathtub that speaks a different language?

Or.

What do you do when a stoopid hooman rescues you and then proceeds to start courting with you?

Complete | 101 CH | Contains Smut

Wavelength by gardengalaxy

Summary: Izuku practices surfing away from prying eyes, knowing he will have lots of attention on competition day. But what if he's already caught someone's interest?

One Shot | Trans Deku 

Rated - Explicit

A Breathless Song by chibicharlie95

Summary: Izuku loves the sea, so much so that he can never seem to part with it... But will he become a part of it? A siren's song in the middle of a storm may help him to find the answer.

One Shot | NSFW

what the water gave me by twinstarsies

Summary: "It's like I'm challenging fate," he says to a hermit crab he finds tucked into a crevice in the rock. "I'm daring it to knock me into the water just to show me who's boss. At this rate, it's probably going to win." 

"Something's gonna knock you into the water, alright, but it won't be anything as nebulous as fate," a voice says, tone wholly unamused. 

Izuku startles so hard that he forgets to use his quirk to catch himself as he slips from his perch on the rock into the ocean. 

— — —

Izuku goes on a forced vacation and meets the love of his life.

Complete | 2 Chapters

Contains Smut | Trans Midoriya

Call of the Siren by Gemsom

Summary: Izuku always imagined that sirens sang their victims into the water, and that their helpless victims could do nothing to resist. He almost wished that was the case.

Every time his captain’s ship crossed the narrow sea, Katsuki came to see him. The siren's friendship seemed so genuine, but Izuku was smart enough to know that the creature was sweet talking him to his death. Katsuki never denied it either - asking over and over for Izuku to offer his life.

Of course, Izuku had no way of knowing that the siren planed to give him a new one in return.

Incomplete | 9/18 Chapters | NSFW

Last Updated Jan. 2023

[pinkykats-place]

Mermaid AU🧜 mer deku x human baku

AO3 Fanfic Recommendations

BakuDeku

Disclaimers!

None of the stories linked below are mine.

Some contain mature content - read tags.

Art not mine - artist thegirlinthefandom.SG

Note: If you read any of these works and like them please let the author know with a kudos and/or comment!

Something Fishy by 9oz

Summary: Midoriya, a mermaid, ends up on barbarian pirate captain Bakugo's ship and it's not good news (yet).

Complete | 8 Chapters | Mature

Out of these Waters by awkwardtypeos

Summary: (Little Mermaid AU - with a twist)

Izuku realizes that not only did he just fall out of love at that exact moment, but he also realizes that Katsuki Bakugo is the biggest asshole he’s ever met in his entire life. He sold his soul to a sea witch to be with the world’s worst human being. He’s too furious to be sad - so Izuku stands up on his painful legs and slugs Bakugo right in the jaw, hard, and watches him scramble backward clutching at his face, spitting out more curses than Izuku knew to exist in the human language.

Complete | 16 Chapters

Rated - Mature

If the stars could sing by Evilkat23

Summary: There in front of Aizawa was an aquarium the size of the wall, which, given how big and long these walls were, was impressive. The aquarium was back lit by a soft blue back light and fake background of the ocean. Yet, there weren't any fish in this aquarium…

Well…

There was one. Kinda.

There in the aquarium was a mer…boy?

Abandoned | 7 Chapters | Mature

Of Love, Scales, & Fins by orphan_account

Summary: Katsuki Bakugou is doing what he can to rise up in the ranks as a criminal, even if it is wasn't his first choice in life. Of course, he made the mistake of messing with the Shie Hassaikai clan, which landed him in the river to swim with the fishes.

Or, at least that's what he thought. The last thing he remembers before waking on the riverbank is a beautiful face & a soft kiss.

Then, the same man, whom he thought was just a figment of his imagination, shows up at his door, naked aside from his neighbor's garments & telling Katsuki that he's a member of the merfolk! What the fuck?

Complete | 16 Chapters | NSFW

Wish by Darkshadow

Summary: Eight year old Katsuki goes to the beach only to spot the most beautiful creature he has ever seen, can he convince the merman to stay by his side even through times of struggle.

One Shot | Mature Themes | No Smut

I Am No Fisherman's Slave by DanaEliza

Summary: After many failed attempts, captain Bakugo has set sail for an island that mostly certainly has mermaids. A species he has been looking for, for years. But what if instead of finding a mermaid, one has already found them?

7/? Chapters | NSFW

Last Updated Feb 2021

Home is Where the Heart Is by RoboticSpaceCase

Summary: Tricked into working under a strange man as a “treasure hunter”, Katsuki Bakugou finds himself out on a boat, trolling the waters for something interesting. When he accidentally catches a mermaid, Bakugou knows he’s found his way out of his boring job and all of his debt. All he had to do was make it back to shore.

12/18 Chapters | NSFW

Last Updated 2020

Life Amongst The Waves by Skelekitty

Summary: Izuku and Bakugou met as children. Izuku got caught in the currents during a storm out at sea and ended up being washed ashore on a beach. It just so happened that Bakugou was out for a walk early that morning and found him unconscious. He helped Izuku and got him back in the water.

After that they met often in a secret cave to escape the eyes of others around, this went on for a few months, but one day Bakugou stopped coming.

Incomplete | 7/? Chapters | SFW

Last Updated 2019

When you hold me by Serah_chan

Summary: It’s another oil spill, Katsuki’s told. Rescue and containment operatives have been mobilized to save as much life and hold off the growing blotch of sticky death spilling into the bay. Katsuki’s unit gets sent out on boats to set up oil boons. He’s just finished and is getting ready to go switch to life rescue when he spots something hits his small boat. What the fuck? He thinks just before there’s another thud. He rushes to the side to take a look, aware it may be an animal in peril... what he finds instead is an oil slick covered hand reaching out, pressed against the side of the hull.

Complete | 24 Chapters

A Sea of Green and Red by TriforceAngel

Summary: Pirates are terrible, ruthless, taking and hurting others for anything that they want. Or are they?

Taken from his home and his loved one's Izuku must find a way to get back home beneath the waves. Will he have the help to do so? Or will he change his mind to pursue something he had never experienced before?

WIP | 20/? Chapters | mature content

Last Updated May 2024

At An Ocean's Divide by that_enby_nerd

Summary: An AU in which Midoriya is a merman living near the kingdom of the Bakugo family, and a forbidden connection forms between the prince and a knight of the sea.

Incomplete | 12/? CH | Mature

Last Updated May 2022

Series: Pirates and Sirens by BluGemRising

2 Works