Levi has been on the sea for more than 5 years now. He's a captain of the ship Survey Corpse, and for the past 3 months him and his crew have been sailing the seas, looking for a mythical creature known as a, Mermaid. But there's no such thing, mermaids and merman are too pure, to innocent to exist in our world. The only thing close to a mermaid or merman, is a Siren. A deep sea creature that's seductive, and evil, they're known to lure helpless sailors to their death, with there beauty and voices. While sailing, a storm comes, and soon a certain pirate hear's the sweet song of a Siren named Eren. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Author's Note: This story is basically AU which Eren is a siren, and Levi is a pirate. There will be a lot of fluff moments in this story, and not a lot of smut. And the characters, images, or videos in this story do not belong to me, I only own the plot of the story! I hope you enjoy!