The Sea Siren and the Pirate (Pirate!Claude and Mermaid!Byleth AU Fanfic)

(A fanfic of a Mermaid AU with Claude and F!Byleth from FE: Three Houses. Purely for fun.)
Claude is a noble pirate, out for treasure, gold, and world peace (though no one's aware of that). But during a storm on the ocean, he ship and shipmates are wrecked and lost, leaving him on the shores of a remote island. He's then greeted by a beautiful lady with a mystical, hypnotizing voice.....come to find out she was a siren of the sea. Read this small adventure and how it plays out!