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yandere-daze · 1 month

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I thought it was high time that I finally wrote something for this man and this idea was stuck in my head for days. I hope you enjoy! <3

gn reader

2.3k words

cw yandere, obsessive behaviour, hypnotizing siren song, manipulation

Yandere! Siren! Sunday x Sailor! Reader

You weren´t supposed to be anything more than an easy prey. A human led astray by his enchanting tunes like any other, only to be torn apart once within reach.

You were a simple sailor sailing the deep waters of the ocean with your small crew. For what purpose? Sunday wasn´t quite sure and he didn´t really care to know. All he yearned for was sinking his claws into your vulnerable flesh as he dragged you to the bottom of the ocean.

You see, Sunday was a siren, a hunter in the image of a beautiful young man with grey hair and enchanting golden eyes. Were it not for his singing voice, a deep gaze into his radiant eyes would be enough to tempt any poor fool into his waiting arms. Yet his voice, oh his voice, its heavenly sound masking his dark intentions.

Within his lifetime, Sunday has lured many unfortunate sailors to their demise though, in recent times, fewer and fewer boats have delved through the waters he called his home. From what he had witnessed being whispered onboard, tales of cunning and vicious sirens roaming these waters have reached the mainland, causing many to steer clear and avoid this place.

This naturally annoyed Sunday, for the flesh of humans was what he sustained himself with. This fact only increased his determination when after quite a long while of waiting for a sign of life, a boat had finally lost its way into his domain again. Sunday had been hungry for way too long now, he couldn´t let this stroke of luck go to waste.

So certain that he would finally claim his prey again, he decided to first spy on the passengers of the boat before making his move. It was important for him to know the routines and habits of the sailors if he wanted to catch them alone to entice them to run into their doom.

As a siren, Sunday was more powerful than an average human but even he wouldn´t be able to fight off several sailors if he were to try and hypnotize someone in broad daylight. He couldn´t risk the crew becoming aware of his presence and leaving, he couldn´t go on without another meal again.

And so, he secretly started spying on the passengers of the small boat, staring at them from behind a rock and making sure to keep his tail concealed within the water. He watched everyone go along with their days on board the ship when something unexpected happened.

He saw you, stepping away from the rest of the crew to stand near the edge of the boat, a smile on your face as you let the sun shine on your face. Without even realizing it, you had stepped close to where Sunday had gone to hide. You were so close, almost within arm´s reach. For a moment, Sunday deliberated if this was his chance to strike.

With you separated from the rest of the crew like this, it would be a simple thing indeed to lure you into the waters where you would disappear forever.

But just as he thought this, he stopped in his tracks as he watched your carefree smile, suddenly becoming enchanted by the way the light of the sun rained upon your skin. For lack of a better word, your presence at that very moment was mesmerizing and Sunday felt warm inside as if the rays of the sun were descending on him instead.

And then, for a moment, Sunday almost felt his heart stop for then you opened your mouth and started, he almost couldn´t believe it, singing.

There you were, practically within the jaws of a predator, and letting your soul rejoice in song so carelessly. And yet, within your naivety, Sunday couldn´t help but feel at peace. Your song rang out across the lonely waters, unaware that your secret audience was becoming more and more enchanted by you by the second.

Your singing, Sunday couldn´t quite describe it. It sounded nothing like his own singing, which was beautiful and yet felt intrinsically wrong somehow. Your song was nothing like that. It might have not been as pretty or practiced as his own singing, but yet it managed to ring true within his heart. Your song felt earnest and real, untainted and uncorrupted by malice. Within seconds, you had captured his attention and heart, yet you were completely unaware that he was even present.

In an ironic twist of fate, Sunday felt himself being pulled towards you as if touched by magic, an ardent longing for you deep within his chest. It was as if you were the siren calling out to him, beckoning him closer like a lovesick sailor lost at sea, yet Sunday was sure that instead of a sudden demise, he would find true salvation within your arms. With the way you were holding out your arms, he could almost imagine you wrapping them around his body in a lover´s embrace, pulling him so close as if you would never let go of him again.

Because he knows that´s what he would do if he finally had his beloved in his arms. For only a fool would ever let go of the person they want to spend the rest of their life with. It filled him all at once, this desire to have you for his own, to make you his dearest mate.

You were radiant and joyful in a way he had never seen before and he couldn´t bear the thought of letting you slip away from him.

And from the desperate yearning he could so clearly hear in your song dedicated to just him, he knew that you must feel the same way. You were just waiting, begging to be taken away by him. Why else would you walk so close to him, all on your own and profess all of your feelings like this? Sunday now knew that this meeting was fated to happen and he would be sure not to waste it.

He had been watching you closely for the past few days along with the other sailors aboard the ship and he saw how the other crew members acted around you. He had thought nothing of it back then but now boiling jealousy filled his being as he remembered how chummy they had been acting with you. How they had laughed and joked around with you so easily, how they had thrown their arms around you and sang cheery tunes beneath the starry sky.

He especially detested that one scoundrel that had dared to kiss your cheek so invasively. How dare they treat you like this? How dare they lay their filthy hands on you when your beauty was meant for solely him to treasure? But not to worry, Sunday would finally bring you home and keep you safe.

He understood your surprise when he finally emerged from his hiding spot and started swimming towards you. You looked so pitiful with your body shaking and your eyes growing wide when you saw his shimmering white mermaid tail. You poor thing must be frightened out of your mind because of all these stories you were told about his kind but do not be afraid! Sunday would never hurt you like this.

You were special to him, you just needed to allow him to show you that. You backing away from the railing, backing away from him, just wouldn´t do.

"Darling, there is no reason to be afraid, I´m not here to hurt you, do not let their horrid tales corrupt your thoughts. I am here to finally take you home!" He reached out his hands to you, wishing for you to jump into them and accept his love willingly yet he could only click his tongue in disappointment when instead, you took another step back.

"D-don´t come any closer!", you shouted out, breaking the poor siren´s heart in the process. How it hurt him to see you so frightened that you would turn your soulmate away. But no matter, he was prepared to take matters into his own hands and nudge you towards your own happy ending. You just needed a little bit of convincing.

"My darling, please listen to me! You and me, I know we were meant to be! So please don´t resist this, alright?", he hummed gently, his voice almost pitiful while begging you to hear him out.

You would have even felt sympathy for him if you weren´t acutely aware that you were facing a dangerous predator. There was no doubt in your mind that this was a siren and you needed to get away from there fast.

But unfortunately for you, you weren´t quick enough for as soon as you had gathered your resolve, Sunday´s ethereal singing voice had swiftly broken it down.

Suddenly, all your previous thoughts about him being a danger to stay away from evaporated, leaving you confused as to why you ever wanted to run away from him. There was nothing dangerous about him, was there?

Instead, your mind was now being filled with pleasant images of you and the siren spending time together, of him holding you close protectively, of him swearing his eternal love and kissing you. All of a sudden, you felt warm all over as you gazed deep into Sunday´s eyes and you knew that he was the one that was meant for you.

Slowly, one step at a time, you walked closer to the edge of the boat again, where Sunday was happily holding out his hands for you to take, eagerly grasping at air as if to usher you even closer.

And you were all too eager to follow his demands as a sugary sweet melody droned on and on in your ears, overwhelming you with feelings of everlasting love and devotion.

"That´s it, darling. Come closer. It´s only a few more steps.", he urged you on, almost desperately as you almost came into touching range. It was only a few more moments until he could finally have you in his arms. And once he did, he would never allow you to leave him again. Not that you would be able to underwater.

Voices were picking up in the background, quickly getting closer and Sunday realized that your crew must have picked up on what was happening.

"Come here quickly, darling!", he shouted, his voice growing more urgent and desperate the closer the booming voices got.

And you did as he said, quickening your steps towards him with a lovesick smile on your face.

"I´m almost there, my love", you said and Sunday´s heart almost burst at the sweet tone you took with him. He knew you were currently under the influence of his siren song but he strongly wanted to believe that the love you felt for him was real. Why else would you too be looking at him so full of yearning?

"Someone, quick! Grab on to them! That siren is trying to lead them to their death!", a gruff voice yells from the back with several more footsteps scrambling quickly behind. They were advancing on you fast and Sunday knew he was almost out of time as one quickly ran up to you.

"No, no, no! Don´t touch them! They´re mine! Don´t ruin this for me!", he yelled out in anger, his eyes a furious storm as they glared at the person trying to get a hold of you. He couldn´t fail so close to the end. How dare they accuse him of trying to harm you?!

"Please, you need to come to your senses!", the sailors try to reason with you but it´s almost like you can´t even register what they say.

" I need to meet with my love, he´s waiting for me.", you say, still smiling as you step to the very edge of the boat, looking down at a Sunday growing more and more manic by the second.

"Jump into my arms, darling! Accept my love and be mine forever!", the siren calls out to you as a crew member grabs into your arms, trying to pull you back.

"Don´t listen to him! Please, don´t do as he says!"

You struggle violently against the hold, kicking and screaming, demanding to be let go.

"No, you can´t separate me from my love, let me go! I need to be by his side!", you scream and with an especially harsh kick, the sailor lets go of you for a moment, leaving you with enough time to take the final step and jump right into your demise.

Sunday gently catches you in his arms, a lovesick smile on his face as he finally gets to hold you like he wanted to. You´re finally all his and there´s nothing that can be done about it anymore.

"I´m so happy you chose me, darling. We´re going to be so happy together. I´ll take such good care of you. No one else is ever going to touch you again.", he whispers into your ear and you can´t help but giggle joyfully at the prospect, your mind singing with affection, drowning out the growing panic within you.

But what is there to be afraid of? You´re finally united with the love of your life and nothing will ever separate you again.

Sunday holds you firmly as he quickly swims away from the boat, leaving your panicked crewmates behind.

Now that he finally has you, he will make sure that you´ll grow to love him even without his song. He knows that deep down, you love him just as much as he does you, you´ll just need a little bit of time to adjust to your new life underwater. He knows of a very beautiful underwater cave that he can keep you in until you grow more accustomed to your new life with him. Down there, you´ll never be able to escape his grasp again.

You will be his forever, for that is the consequence of putting him under a spell like you has.

And then he takes you with him to the very depths of the sea, never to be seen again.

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