#im sorry i didnt have this done by your birthday please accept my belated gift ily

[strawberrystepmom]

a trick, a treat, a few tweaks later and i am proud to present...siren suguru geto for @s-une! happy halloween and thank you for participating!

contains: NSFW, MDNI. siren!geto x afab!reader. reader is lured by a siren's song, semi public sex (you are in the water), reader is wearing a nightgown, piv sex, inhuman anatomy, vaginal fingering.

The moon shimmers through the sea mist that covers your feet and legs where you stand, lending an almost eerie glow to the night surrounding you. 

This isn’t the first time you’ve felt yourself called to the shore as of late and you are struggling to put your finger on exactly why you return to this very rock every time, knees pushed to your chest as your nightgown flutters on a cool sea breeze. This is the fourth night in a row going through the same motions but you sit and wait for a familiar tune to pierce the night.

It feels like a private concert every time you come and sit, an alluring tune bouncing off of the rocks behind you. The sound is carried over the water and it fills your ears and your heart, your eyes fluttering shut as you darken one sense to enhance another. 

The beach is silent aside from the breaking of the waves as they approach the shore and it mixes with the eerie singing, your closed eyes feeling too heavy to even open. The breeze ruffles your hair and the night feels calm but a splash below where you sit shocks you and your eyes shoot open, glancing below to see movement in the water.

The mist hovering above the water conceals whatever hides beneath it, obscuring what is causing the splashing from your view. You unfold your legs and instead tuck them beneath you, using them as leverage to lift you higher to peek over the edge of the rock and still keep yourself mostly concealed. A sleek black shadow dances through the water and you keep silent, flattening yourself to the rock as much as you can while still maintaining a look at what’s below.

The harmony that draws you to this spot every night begins once again and you look around to spot the source. Is there someone here with a radio? Is there a ship with a deck party further out than you can see in the darkened night?

Unexpectedly, the vocalizing sounds closer than ever and you peer over the edge of the rock again to spot a smiling face through the clearing mist. You startle, shouting in surprise, but you know the song is coming from the lips of the man in the water. He makes eye contact with you, amused by the way your face pokes just past the edge of the rock, and you tilt your head curiously.

“Uh…hi,” you offer quietly and he sings to you in response. You’ve never heard the song before and there are no lyrics, simply vocalizing, but it’s hypnotic to watch his throat bob with every note and his jaw open and shut. Whoever this stranger is, he’s nothing if not fascinating and beautiful enough that you don’t mind sitting and watching, front row for your own private performance. “You’re really talented. Do you do this professionally?”

His song subsides and he smirks at you. The mist continues to clear and you get a better look at him, surprised by the way the dim light only serves as a means to enhance his beauty. You’re certain he’s gorgeous in the daylight, a man like this could never be anything else, but he’s striking just like this. The shadows settle across his face perfectly.

“You could call this something of a hobby.”

His voice is as velvety as the night and you shiver, the cool evening air leaving a trail of goosebumps across your skin. At least that’s what you tell yourself while scooting back down the surface of the rock, enough that your entire torso now hangs over the edge and your hands brace your body. His eyes dance across your body and his smirk never falters, even as he splashes in the water below you. 

“What brings you out here all on your own?”

The assumption that you’re on your own strikes you as odd but you realize it’s the only one he could possibly come to given the surface of this rock is small and you have given no indication that another person could be with you. You giggle, one arm now dangling off of the edge of the rock. “The song you were just singing,” you explain with an easy smile. 

Perhaps you should be more apprehensive to share but you’re relaxed, the night is beautiful, and this man appears to be no threat to your current state so you let it ride. New friends can be found everywhere if you look hard enough, after all.

“Want me to sing it again?”

A nod is your response and you shut your eyes to enhance the experience, ready to allow the sweet notes fill your ears and soothe your mind. Your arm and hand still dangle down the rock and he stretches his torso enough that he can reach up and grab your hand, capturing it between his long fingers.

“Come down here, it’ll make the experience even better.”

You aren’t dressed for an evening swim, nothing but a white cotton nightgown covering your body, but you wonder what it could hurt. There isn’t another soul for miles and it’s just you and this enchanting man, his voice wrapping around you. You sit up and let go of his hand in the process, carefully crawling down the rock and he catches you when you jump into the water with a splash.

He laughs while your legs pump through the water and bring you bobbing to the surface. His tail brushes against your legs but you think nothing of it, assuming it’s an errant piece of seaweed or a fish breezing past. The man draws you against his chest and looks down at you, golden eyes framed by long dark lashes gleaming.

“What’s your name?”

Water droplets trail down your face and cheeks and he wipes your hairline with his thumb.

“Suguru.”

Giving him your name in return, you take a chance and press your palms against his chest, leaning your body in his direction. He doesn’t move, allowing you to rest your head on his shoulder and you shut your eyes. Without another word, his song begins and your heart races hearing the seductive notes spilling from his lips while pressed this close to him.

Suguru’s vocalizing grows closer, right above your ear, when he rests his head against yours. The intimacy of the moment catches you off guard and your back stiffens though he’s quick to put one of his large palms between your shoulder blades, singing a soothing tune while rubbing your shoulders through the damp cotton of your nightgown.

His face is so close to yours and you open your eyes, watching his mouth move with each note he sings, deciding to get closer to the source. Your face edges ever closer and before you can stop yourself, your lips press against his and muffle his music. 

He kisses you back. You’ve never been touched so sweetly, lips enveloping yours and hand still planted on your back. His tail swishes around your feet and this time you break the kiss, looking down to find the source of what’s brushing against your skin.

“Do you feel that?” Your face twists as you look around, his fin continuing to dance around your ankles. He tilts his head to one side, humming. “What do you mean?” The sensation of his tail makes you kick your feet beneath the water and he laughs, pulling your face to his for another kiss.

“I have a secret,” he whispers against your mouth and you giggle nervously. Your inhibitions are lower than they have ever been and you’re certain that unless this man tells you he’s a serial killer that you won’t be perturbed, enjoying the gentle bobbing of your bodies in the water while you kiss. 

“Oh?”

“What you keep feeling is me,” he brushes his tail across your legs again and your eyes widen. Looking down into the dark water below, you catch the errant shimmer of his tail when he wraps it around your legs, pulling you against his body. Your nightgown clings to your chest and leaves nothing to the imagination, hardened nipples visible and accessible through the fabric, and they rub against his chest while he holds you.

“What are you?”

Your astonishment is apparent in your words but you make no attempt to scurry away from him, the fins at the end of his tail brushing against your inner thighs and making you squeeze against them. He chuckles, the fins traveling higher until they brush against the cleft of your pussy. 

“Does it matter?”

The hand that rests on your back glides down toward your ass, his palm cupping a handful. He uses his grip to lift one of your legs so that it wraps around his tail and his free hand travels between your bodies, your nightgown pooling in the water around you as he lifts it enough to have access to everything you’ve left bare beneath it.

It doesn’t matter as long as it feels good, you reason, and it feels amazing when his fingers massage your slit, the water surrounding the two of you doing nothing to wash away your slick arousal as it seeps from inside of you. You’re only partially spread thanks to the leg you have hooked around his tail and he’s quick to rectify that, hand sliding from your pussy to your thigh. 

He wraps your second leg around his body and you whimper when his slick tail rubs against your sensitive cunt. The scales feel smooth as your hips glide over them but he stills you by gripping your hip, the desire to be the one responsible for your pleasure the only thing on his mind. 

“Let me,” he offers and you nod, bottom lip between your teeth while gazing up at him through your lashes. His fingers travel across your hip and your pelvis, featherlight touches while searching for your warmth. They find it easily and he once again pulls the length of his finger through your slit, making you gasp and buck into the touch. 

Chuckling, Suguru presses his lips to your jaw and neck, your head tipping back to allow him access to the soft expanse of your throat. He takes advantage of the space, placing open mouthed kisses along your skin while he inserts one of his long fingers inside of you. A gasp is all you can manage, mind numb with the intensity of the situation you’ve found yourself in.

“What a beautiful cunt,” he croons and if the words were to come from anyone else they’d feel too lewd and you’d be embarrassed but from him? Dripping from those lips like honey? You clench around his fingers and he smiles against your throat. You’re exactly where he wants you to be and his thumb brushes against your clit while his finger works you open, a second joining the first. 

Water gently ripples around the two of you, your hips grinding into his hand. You chase the feeling twisting in your gut, biting back breathy moans and whines, and he presses his face against your temple.

“If I fuck you will you let me hear how good I’m making you feel?”

You clench around his fingers again and he chuckles smoothly, his cock surfacing from within his tail and prodding at your entrance. He positioned you perfectly so that your warm pussy rests right above where his cock reveals itself from and the feel of your heat against the head of him makes him hiss through his teeth.

“Promise me you’ll let me hear just like I let you hear my song.”

Let you. He allowed you to hear his song, the call that beckoned you across the beach and right into his domain, so you agree with a nod. The blunt head of his cock brushes against you and immediately, you moan and your hips chase him for more. You aren’t certain of what to expect when it comes to his anatomy but you’re prepared for something different than anything else you’ve ever allowed inside of you, taking a deep breath when his head prods at your entrance.

The head of his cock slips into you and you gasp, stretching to accommodate him so deliciously your eyes close. True to your word, you let him hear your pretty moans as he slips further inside of you and this is where the differences between him and any other cock you’ve ever taken become apparent.

The texture is different, slick and bumped and your walls welcome the unique sensation by gushing around each inch he slides into you. Your covered breasts bounce as he gently rocks himself into you and the small ripples become larger ones when his pace quickens, his grip on each of your hips giving him the leverage he needs to pull you up and down his length.

Your mind swims, ripples of pleasure far more peaceful than the ones thrashing in the water around you making your body tingle. Your clit brushes against his tail every time he thrusts into you and your bodies are pressed so closely you can do nothing but grind yourself down to meet his motions. 

The moans escaping you are like music to him, roles reversed, and his tail remains twined around your legs to keep you in place when his pace increases. Each rut, each sweet brush of your clit against his tail, sends you spiraling and you whimper. 

“Suguru,” you say his name and it’s the sweetest sound he’s ever heard. He grins, pressing kisses to your throat once again while keeping the rest of you held as tightly to him as possible, and your pussy clenches and massages his length as you cum with a shudder. You shout his name to the moon above, the only witness to what has happened tonight, and he lets himself cum alongside you, filling you to the brim with his sticky release. 

Panting, a satisfied smile comes across your face when you look up at him to see the faint dusting of red across his cheeks. The two of you look at one another wordlessly, his cock eventually softening and retracting into his tail, but you stay with your legs wrapped around him. 

He begins to sing again, soft and gentle, and you let the waves and his song lull you to sleep. 

You hardly recall what happened when you wake on the rock where you started your evening, the sun rising over the horizon in the distance. Looking around for Suguru, your brow furrows until you gaze over the rock and see the pearlescent flash of his tail in the water below shimmering beneath the rising sun.