Even Underneath The Waves - leveragehunters (Monkeygreen)
An Archive of Our Own, a project of the Organization for Transformative Works
When the siren came to the merfolk clan in search of a temporary mate she knew she’d bear a daughter, a full-blooded siren, powerful and deadly. Instead she bore a son.
It was hard to be the son of a siren, a creature of suspicion in the eyes of his father’s people, and Steve soon left his father’s clan to wander the oceans alone. Alone, that is, until he found a human like he’d never seen. A human dressed all in black, surrounded by blood and death. A human whose heart’s desire, buried deep beneath an inhuman shell, was crying out not to kill.
Amazing! I loved the personal twist that the author gave to the mermaid trope. The specific mythology that they created was perfect for Steve and Bucky!