#m: siren | Explore Tumblr posts and blogs

eempyreall · 1 day ago

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♪ 𝑝𝑙𝑎𝑦𝑙𝑖𝑠𝑡 ♪

༺ Beneath The Waters ༻

Oneshot ~ Jujutsu Kaisen x Female Reader

Summary ~ As a marine biologist, you rescue an injured siren. Now, five of them are obsessed with you—and they’ll never let you go.

Featuring ~ Gojo Satoru, Sukuna Ryomen, Geto Suguru, Fushiguro Toji, and Kamo Choso

Extra Notes ~ Tokyo Revengers’ Version - Blue Lock’s Version - Oc’s Version

*I am not a marine biologist, I searched up everything that pertains to the career.

This story should only be posted under eempyreall on my tumblr, ao3, wattpad, and patreon. Report if you see it posted under anyone else but me.

l apologize if I get any Japanese etiquette or culture wrong, I literally have to research the culture for some of my fandom stories so if anything is wrong, please excuse my ignorance.

|| Warning ||

You and the characters are 21+. Although I picture the reader as a black cis-gendered female, physical appearance will not be described at all.

Content within this story may not be realistic or factual.

I do not condone any of the behavior displayed within the story.

There may be dark content such as: gore, violence, triggering topics, graphic scenes, vulgar language, explicit content, sexual content, non consensual and/or dubious consensual content, etc.

That being said, this story is for 18+ only.

The ocean always harbored a serene atmosphere at night.

Although you spent most of your days amidst the sea, working alongside your team as the waves rocked against the trawler, you couldn’t deny the tranquil ambience of sitting on shore while the stars glowed amongst the nightly blue firmament.

To clarify, you enjoy your career. Although there are different categories of work, such as laboratory and data analysis, you spend your day diving into the deep seas, collecting sea specimens, studying all the beauty the earth provides underwater, and giving your fellow biologists something to write about.

It contrasted with your lingering fear of the deeper abyss that the ocean conceals. There was always an underlying edge of caution when dealing with the intrusive thoughts that plagued your mind. You spent most of your time in reefs—the brighter, most pleasing section of the sea.

“You ready to get going?”

You shift your head towards the voice that came from your right.

Your eyes meet the dark irises of one of your teammates, a close friend of yours who studied alongside you during your growth in the marine industry. You lift yourself from the sand, pants slightly stained from the debris, as you brush your palm along your bottom.

“Nah. I’m gonna stay a little longer,” you reply, sighing as you eye the gentle waves of the sea. “You can go without me. I know that we got an early shift tomorrow.”

Riku raises a brow at you while crossing his arms. “You know that even if they’re real, you’re not gonna find anything, right?”

Ah, I’m about to get the same lecture, aren’t I?

You roll your eyes as you place your hands against your hips. “Mind your business, Riku,” you sing playfully, but with an edge of solemnity in your tone.

He hums. “I’m just saying, Y/n. You’ve looked quite exhausted the last few shifts. Your hyperfixation on mermaids is becoming a problem,” he says, his voice laced with concern and slight annoyance.

You scoff, crossing your arms as you face ahead. “First of all, the term is siren. Second of all, you don’t need to worry about me. I still get my work done.”

You miss the solemn expression that appears on his face—the familiar guise of pity that always makes you shift with discomfort.

“Look, I know more than anyone that it’s hard to heal from a family member’s death, but Y/n, you’ve got to let it go.”

The statement sent a shift through your entire body, tension stiffening you in place as the memory swirling in your brain flickered before you.

“Shit! Everyone, grab the earplugs!” the leader of your team shouts.

You immediately turn to your bag, rummaging through the contents before you snatch the cord. You shove the plugs into your ears just as the song begins. Although you can feel the vibration of the melody against your chest, the blockage of your ears keeps you safe from the siren’s frequency.

When you turn around, the relief that had rushed through you drops vehemently as your eyes flick over the five members of your team—including your brother.

Your breath hitches as you watch the color drain from his eyes, his body stiff in a trance as he faces toward the siren who peers from the waves of the sea. You can only see her multicolored eyes and the pale blue hair that’s flat against her head, the rest of her strands floating around her as she stares at the men.

You feel breathless, panting as you watch them take a step forward, in unison. A spike of fear surges through your spine as the pit in your stomach deepens. You dash toward your brother, nails digging into his shoulders as you stand in front of him, using all of your weight to keep him from jumping off of the trawler.

The splashes of the others are loud, despite the plugs blocking your ears. It only makes the lump in your throat burn as you make eye contact with your brother. As a result of the dullness filling his orbs, you know that it’s too late. He’s already gone.

But you don’t stop. You continue to press against him as the sobs escape your lips.

“Please, B/n! Please, wake up,” you weep.

The siren reaches for the first man, her claws splitting the flesh of his skin as she begins her feast, ropes of red already staining the waters as the rest of the humans swim toward her. Your head shifts to the side to see that a few more sirens have appeared, the women beginning their attacks on the men. One peers from the side, awaiting the release of your brother.

Despite his dream-like state, he is strong. He pushes against you like a stone wall. His expression is bare of any emotion as he continues to stare at the ocean, shoving against you like a non-playable character in a game.

Eventually, you can’t hold on any longer.

For a while, you couldn’t forgive yourself. Despite your first shift ending in a massacre, you couldn’t accept how weak you were against the creature’s voice.

It ached.

You sat on the trawler, weeping, until the S-O-S boat arrived. You tried to warn them, but nobody believed you. It was an unexplainable event. They kicked it under the rug, rolled it up, and burned it—as if nothing happened.

It was only you and your brother, so there was no memorial. No familial speeches from family or friends, as neither of you had any, aside from Riku, who stood by your side through it all. Still, his mind couldn’t be changed along with the rest. He only accepted your obsession through pity and nothing else.

“You can go home, Riku,” you say, a tone laced with firmness and an impending rage that you keep within wraps.

His eyes flicked over you for a moment before he exhaled sharply, guilt reaching his core. “Y/n, I’m sorry—.”

“Can you just shut the fuck up and leave?” Your eyes narrowed in his direction, fingers curling around your thumbs as you squeezed before releasing the tension.

His lips pressed into a thin line before he nodded, grabbing the keys from his pocket and turning away. “See ya tomorrow,” he says before walking off.

Another hour passes as you sit on the beach, well into midnight, watching the breeze gently push against the waves. You finally stand once more, brushing yourself off as you turn towards the pathway leading to the parking lot.

An unfamiliar sound catches your attention, along with a splash of waves that echo near you. You pause, listening for a moment as your ears search for the unknown frequency once more. Your head shifts to the right as you hear another high-pitched wail coming from the distance. It was slightly guttural, a broken hum of distress.

Before you could register your own movements, you find yourself walking towards the frantic melody. Your heartbeat thuds against your chest as you follow the noise. Your pulse throbs as you feel the hairs on your skin stand tall.

That sound… it’s not quite the same, but…

Once you reach the spot, your muscles stiffen in place, brows raising in shock.

Lying in front of you is a distressed male who holds the upper body of another. His wet platinum strands frame the sharp features of his facial structure as he looks down at the unmoving male. His platinum eyelashes conceal his irises as a frown laces his expression.

His skin is a silk cream, and the translucent top of his ears forms into elongated tips, almost resembling skin-colored, iridescent fins. The same texture protrudes from the sides of his arms, though with a blueish-white-hued tinge. His claws are long, gently grazing against the cheeks of the male below as he holds him against the lap of his long white tail.

The male below him matches the fish-like features, though the pigment laces a deep, almost black, indigo hue against his fins and long tail. His black hair is disheveled and wet, though flaring under his head as the siren holds him. His eyes are shut, irises concealed by his lids as he seems to be trapped within a deep slumber.

Crimson covers the side of his torso, staining the sand beneath. From the distance you stand, you fail to see the exact wound. Your brows furrow as determination sets into your core, and you turn your back to the sirens as you jog to your car.

Why do I feel the urge to help? I should just let him die.

But you know that it isn’t fair to blame them for a tragedy that occurred years ago. It isn’t fair to blame the entire species for something that’s a part of their nature.

Your search for their existence is only to prove to yourself and the others that the incident wasn’t imagined. That sirens are real and should be studied. This only motivates you for your shift tomorrow.

After you return with the first aid, you steadily make your way towards the two men, earplugs stuck in your ears as you walk closer. You can’t deny the pressure in your chest, anxiety striking you the closer you get.

Once the conscious siren noticed another presence, he shifted his gaze towards you, icy blue irises peering through the lashes that lined his lids. You pause when you recognize the tension of his muscles, a scowl reaching his expression as a distorted melody rang from his lips.

You held your hands up in surrender, ensuring that your movements remained slow and gentle so as to not alarm the creature. A memory of the section of a passage you read during your studies of this mythological species reminded you of their ability to understand various languages, humans included. It was adapted for survival as their variety grew.

“It’s alright. I’m not here as an enemy, but as an aid,” you say, voice proper as you point towards the first aid kit in your hand. “I see that your friend is hurt. I’ve only come to help, if you’ll let me.”

He didn’t move. His gaze remained locked on you with a menacing guise. Despite the danger that radiated off of the creature, you recognized his urge to protect his loved one. It was expected.

You twist the box to face his view, unclipping the clasp as you open the lid, allowing him to observe the contents clearly. “As you can see, I mean no harm. With that amount of blood loss, your friend doesn’t have much time. Just let me help, please,” you say with a calm tone.

Why do I want to help them so bad?

Maybe his protectiveness of the unconscious being reminded you of the feelings you had during your brother’s trance. You understand what it feels like to have someone ripped away from you under circumstances you can’t control. Both sirens are vulnerable in this state. It’s clear that the blue-eyed male cares deeply for the man below him.

You watch as his eyes narrow, his expression revealing his contemplation as he stares at you with wonder. Eventually, he bowed his head to the side, nodding over to the other siren in defeat. You exhale in relief, heading over to the injured man before you kneeled beside him.

You rummaged through the box as you grabbed the necessities to dab, clean, and wrap the wound. The platinum-haired male watched you with caution, eyes roaming over your movements as you tended to the wound.

I never thought I’d ever be in this predicament.

But you didn’t hate it. To be able to help another aid a loved one, despite the resentment you held for the species, caused warmth to spread throughout your stomach.

The patch-up didn’t take long.

You exhaled a breath you hadn’t known you were holding in as you clipped the box shut. The torso of the siren was successfully wrapped.

“I’d advise you to stay out of the water for a little longer, just to give the bleeding time to stop,” you suggest. You already knew that sirens could stay above water for long periods of time. They could live on land if they had legs, though some studies show that very few can transform their tails.

The siren only stared at you with the same cautious look as before, though it had slightly softened. Suddenly, movement catches both of your attention as both of your eyes shift toward the man below you. The man’s eyelids flutter open as he reveals dark, purple irises that flick over to you.

You couldn’t shake the strike of anxiety that surged through your spine, heart beating against your chest as he studied you with an intense gaze. His eyes shifted downward to his wound as you began to grab the box.

I think it’s time for me to leave.

Before you can lift yourself from the ground, a clawed hand shoots to your jaw as you’re held in place. You feel shock contort amongst your expression as your body stiffened to the tight grip.

What the fuck?

The creature leaned forward, slightly flicking his wrist to observe your features with his eyes slightly squinted, as if he was analyzing data and saving it to a file in his brain.

Your hand reached for his wrist, gently lowering it as you picked yourself up from the sand.

“Um… get better,” you quickly say, turning away as you walk toward the parking lot. You cursed yourself for the lack of knowledge on what else you could’ve said, slightly embarrassed.

You could feel their gazes locked on your back as you made your way off the beach.

The next morning was uneventful, your daily routine of deep-diving into the sea stretched throughout the day. It was finally the afternoon, your team filing the samples you and Riku had just collected from the reef you are currently studying.

You couldn’t stop thinking about the sirens you had met the night before. On one hand, you wanted to inform Riku of what you had experienced, wishing you had taken a picture from your phone as proof, but on the other hand, you knew that it wouldn’t have been an appropriate time for that. You also understood that Riku would remain stubborn with his disbelief until you provide physical evidence.

It was a lost cause.

“Break’s over. Let’s get going!” your team leader yelled across the small ship.

You eye the surface of the waves, heavily pushing along the foundation of the ship while the anchor holds you all in place. The sky is a bright blue, clouds streaking across the firmament as the sun shines a bright yellow. It’s a beautiful day, and yet, you couldn’t rid yourself of the pit that formed in your chest.

“Hey, Y/n. I still want to let you know that I’m sorry for what I said yesterday. You were right that it’s none of my business,” Riku said as he prepared the scuba gear on his form.

You followed along, chuckling in response as you placed the mask over your face. “I know. It’s whatever,” you say before patting him on the back. “We’re good.”

He nodded as he placed the snorkel in his mouth, slightly smiling in return before he hopped into the water. Shortly after, you followed his form as you dived into the ocean.

Your arms swayed against the pressure of the water as you peered through the goggles. You swam towards the opposite direction of Riku, aiming for the area that you were assigned to.

Moments later, you reached the colorful section of the reef, passing by various types of fish and sea creatures, some of which you found fascinating to observe. Once you reached the species of fish you were focused on for the shift, you connected a biologging sensor to the animal so that the laboratory could collect data on the behavior and whereabouts of the creature without hurting it.

During your session of tracking the correct species, a familiar sound echoed throughout the vicinity as your body floats. When your head turns in the direction of the noise, a swift force circled around your figure, startling you in the process as the bubbles of the water lined your vision.

Once it all settles, your eyes widen behind the goggles as you stare at the male siren in front of you.

His features aren’t far from the fins you had seen attached to the sirens during the previous evening. The translucent hue is tinged with a deep red, along with the elongated tail that curled around your form as he observed you. His pink locks flared upward, symbols embedded within his skin as his red eyes flicked over you.

As he studied you, his head tilted in recognition before a smirk curled on his expression, revealing his sharp teeth. If you hadn’t studied the body language of sirens for so long, you would’ve thought you were going to be his next meal. He merely looked curious until he gave you a knowing glance.

Suddenly, you jolted as he released a loud, guttural frequency through his lips.

You listened as the rush of water appeared from your sides, head shifting left and right as you searched for the source.

Suddenly, you feel a hand grip your arm as you’re tugged to the side, your eyes shifting over to the new male who appeared.

Another male with similar fish-like features as the former siren came into view. His color scheme is a dark, murky green, iridescent fins tinged with the hue as his claws wrapped around your arm. His short black strands flared around his head as his bangs framed his face. His tail is long, a green that matches his fins.

His lids are a natural slant, green irises shifting over you as a lazy smirk reaches his expression. Your brows raise in confusion at the ambush. Before you can yank your arm out of his grip, you felt a constriction against your opposite arm as another male appeared on the other side of your form.

You face the third siren, a man with two, dark brown pigtails that flow in the water. A dark symbol is drawn over his face as a red hue surrounds his eyelids. The edge of his translucent fins are laced with an obsidian black, along with his tail.

His eyes flicked over you with a bored expression, lips falling apart as an unsettling, melodic frequency echoed from his mouth, revealing his razor sharp teeth.

Your breath hitches as you’re pulled forward, the force abrupt as the water rushes past you. The two men gripping your arms follow behind the red-tailed siren as they make their way through the depths of the ocean, leading you deeper.

What the fuck? Where are they taking me?

You hoped that they wouldn’t travel deep enough for your lungs to compress. Despite your attempts to escape, their claws grazed your skin as their fingers curled tightly around you.

Suddenly, you noticed the lowered percentage of your oxygen tank, eyes widening as you realized you had strayed underwater for far too long. You begin to thrash in their hold, your movements more desperate than before.

Finally, the sirens stop in place, turning their attention to you with a mixture of confusion and annoyance on their expressions. You quickly gesture toward your tank and make a breathing motion before pointing upward.

They pause for a moment, giving each other a quick glance before releasing your arms. You hold your hands up in surrender before swimming upwards, rushing to the surface in a desperate attempt to make it before your oxygen runs out.

Once you made it back to the surface, water splashed around you as you broke through the waves, reaching for the strap that connected you to the ship and pulling yourself onto the platform. Your chest heaves as you fumble with the straps of the mask, yanking it off as you pant.

“Y/n? What the hell happened? You were under for so long I almost came to find you!” Riku exclaimed, rushing toward you as he grabbed the equipment from your hands to help you out of your gear.

You only continue to ease your breathing as the memories of what just occurred swirled through your mind. You couldn’t concentrate on Riku’s muffled words. Your vision is slightly distorted, a sudden dizziness causing your body to feel heavy as your head shifts toward the ocean.

Your thoughts morphed into jumbled words as darkness reached your vision, engulfing you into the void that tugs at your consciousness.

You felt the breeze kiss against your skin as your eyelashes fluttered open. The rays of the sun shine bright over you, the warmth engulfing your skin. As you slowly pull your upper body up from the ground, you could feel the sand sticking to your arms and legs. As you lean forward, your eyes perk, startled as you notice the men sitting around your figure.

What are they doing here? What am I even doing here? Wasn’t I on the ship?

You blinked as you noticed Suguru sitting beside you, legs replacing the obsidian tail that once was there. His arm rested over a propped knee as his bare feet pressed against the sand, shorts concealing his lower region.

Wait… did I just identify his name? How do I even know it?

You look around, seeing the men sitting around you. Satoru sat on your right in the same position as Suguru, though with shorts that matched the white tail he once had. You eyed the back of Choso’s head, dark brown hair waving against the wind as he stared ahead, sitting in front of you, black shorts covering his bottom.

Your brows furrowed as you twisted yourself around, eyeing both Sukuna and Toji who sat behind you, though with their legs stretched out and ankles crossed, leaning on the back of their palms as they didn’t even spare a glance.

What the fuck is going on? Why do I know all of their names?

Your heart begins to race as you try to make sense of the situation. Something feels wrong.

This… this doesn’t feel real.

“Did you know that soulmates can feel a pull towards each other, even when they’re miles apart?” Suguru’s calm voice cuts through the silence before you turn your attention to him.

You feel puzzled by his statement. “Soulmates?” you question, confusion lacing your tone.

You couldn’t see it, but as you walked away from the injured siren and his friend, a long, red thread protruded from your back as it connected you to the men’s chests, splitting at the end as the sirens eyed the fabric.

“It’s her. She’s the fated sixth.”

The male turned his head slightly, facing you with an easy smirk on his expression. “You can swim all you want, but the tide will always pull you along, no matter how much you fight against it.”

Suddenly, a rush of water fills your lungs as your eyes widen, your reality shifting underwater as the depths of the ocean carry you along. Your mask is vacant, along with the oxygen tank that was yanked off of you.

You couldn’t breathe. Your mouth was forced open by the pressure of the water as if it was filling your body. You gasped, suffocating as you thrashed against the surface.

Riku was in front of you, reaching for you with terror drawn over his expression. But then you notice the crimson tendrils that float around him, lowering your gaze amidst the chaos of your erratic motion as you yelp, his lower body completely detached from his torso. He was split from the middle, nothing but a gaping, fleshy hole, his insides floating.

As your vision begins to blur, you realize that you never escaped the ocean. You never even had a chance.

Glowing eyes settle around you as the sirens circle your form, the threads constricting any movement as you float in the middle of the formation. A light glows from the bottom of the sea, spreading throughout the vicinity as it engulfs your dying form.

Pressure forces your legs to press together, contorting your limbs into an unnatural formation as you twist and turn against the threads. Pain erupted throughout your body as you released a guttural scream from the agony shooting through your lower half.

Eventually, you couldn’t feel your legs as you normally would. They stretched until scales covered the skin, a multicolored hue forming as a long tail emerged from your body. You could feel your arms and ears shifting, fins protruding from your skin, matching the color of your tail.

You didn’t have time to feel the disbelief, shock, or devastation as the familiar void tugs at your essence.

—𝚃𝚑𝚎 𝚜𝚝𝚘𝚛𝚢 𝚎𝚗𝚍𝚜 𝚑𝚎𝚛𝚎, 𝚋𝚞𝚝 𝚒𝚏 𝚢𝚘𝚞’𝚍 𝚕𝚒𝚔𝚎 𝚝𝚘 𝚛𝚎𝚊𝚍 𝚖𝚘𝚛𝚎, 𝚝𝚑𝚎 𝚌𝚘𝚗𝚝𝚒𝚗𝚞𝚊𝚝𝚒𝚘𝚗 𝚒𝚜 𝚊𝚟𝚊𝚒𝚕𝚊𝚋𝚕𝚎 𝚑𝚎𝚛𝚎.

—𝚆𝚊𝚛𝚗𝚒𝚗𝚐: 𝚜𝚖𝚞𝚝 𝚒𝚗𝚌𝚕𝚞𝚍𝚎𝚍 (𝚝𝚑𝚎𝚢 𝚠𝚒𝚕𝚕 𝚑𝚊𝚟𝚎 𝚑𝚞𝚖𝚊𝚗 𝚙𝚊𝚛𝚝𝚜)

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You sit up in bed, breathing ragged as you hold a hand to your chest. Your lips are apart as the sweat beads along the lining of your forehead. You quickly pat the palms of your hands against your neck and torso as you ensure that you’re alive and physically apparent.

The lowering sun gleams through the crack of the curtains as it shines over the bedroom. You snatch the covers from your lower half, examining your legs as you curl your toes for reassurance. You exhale a slow breath as you fall back onto your pillow in relief.

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