#I gave Merwin two dicks and I will not apologies for it

[theearlgreymage]

“You have the salt of the seven seas on your tongue,” the Siren breathes out in awe. What must have been his gills fluttering against the sides of his chest. Levi tries to kick and wriggle his way out from underneath the Siren. “Get off of me!!” Frowning now, the Siren holds a look of confusion on his sculpted features. “Oh little one,” there is pity in his tone. Levi loathes pity. “How lost have you become?” “The hell are you talking about?!” Levi shouts. The Siren finally, blessedly, sits back in the small dinghy – seeming to appraise Levi more fully now. “My spell didn’t work on you. You know our songs. And you have our chorus in your throat. You’re clearly a lost one.” Sitting up, Levi pushes himself as far away from the Siren as possible. The words leech the fight from his core. Leaving nothing but exhaustion, grief, and confusion in its wake for Levi. “None of what you’re saying makes any sense,” Levi confesses from behind a fringe of damp locks. Shoulders slumping, the Siren sighs and looks out at the rippingly waves that are gently swaying the boat. “Don’t go anywhere, I’ll be back with answers,” the Siren promises before hoisting himself back into the water without preamble. “Hey!” Levi shouts, suddenly lunging after the Siren. He’s too slow, however, and by the time he reaches the opposite edge of the dinghy where the mysterious creature had been sitting, there isn’t a trace of him left. “By Poisiden… What just happened?”

You may feel compelled to clutch your pearls after reading just the tags one. I may have let the spirit of MerMay guide me a little too freely.

Shout out to @ic3-que3n for being the best Beta Reader ❤

Read it here on AO3

Additional information is below the cut ✂

Chapters: 1/1

Fandom: Shingeki no Kyojin | Attack on Titan

Rating: Explicit

Warnings: Graphic Depictions Of Violence

Relationships: Levi Ackerman/Erwin Smith

Characters: Levi Ackerman, Erwin Smith

Additional Tags: MerMay 2024, MerMay, Merman Erwin Smith, mer!erwin, Pirate Levi Ackerman, Pirate!Levi, Top Erwin Smith, Bottom Levi Ackerman, Bottom Levi Ackerman/Top Erwin Smith, Trans Character, Trans Male Character, Trans Levi Ackerman, Siren Erwin Smith, Erwin Smith Has a Big Dick, Erwin Smith has a Tentacle Dick, Erwin Smith has TWO DICKS, Canon Typical Violence, Attempted Sexual Assault, Alternate Universe - Pirate, Alternate Universe - Merpeople, Sex, Kissing, Boys Kissing, Rough Kissing, Oral Sex, Anal Sex, Vaginal Sex, Period Sex, Erwin is a carnivore and will eat his man out while he's bleeding, Double Penetration, Double Penetration in One Hole, Double Penetration in Two Holes, Blow Jobs, Cunnilingus, I need you to use your imagination with the oral sex, and the fact Erwin has a big human dick and a flexible tentacle dick, Beta Read, Let me believe that merfolk are real and genderfluid af

Levi can’t see the end of the Siren’s tail, it is still hidden beneath the choppy waves. Blue eyes that reflect the bottomless depths settle on Levi.

Summary:

“Hello there,” a deep voice croons from a sharp grin revealing canines that could slice through flesh with ease.

“Fuck off,” Levi hisses as he tightens his grip on the hilt of his sword. Pointing it towards the vile creature's chest. He should lunge right here and now, this Siren has killed his fellow men and set their ship aflame. But something pulls at his muscles, drawing his tendons tight and leaving him locked in place as he glares across the short distance between them.

“Aren’t you an interesting one,” the Siren ignores the threat of Levi’s weapon, leaning forwards until the tip presses against their chest. “My song didn’t affect you, did it?”

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When Levi's ship is set ablaze and he escapes with his life, he meets a creature of the deep that will change his body and his fate.