Fullmetal Alchemist dj - Ningyohime Itan

Pairing: Roy x Ed Ed and Al come back from a trip and find out Roy's been in an accident at sea. Among those rescued is a mysterious young girl who can't talk, can't write, and whose feet seem to hurt her with every step... *and* she's temporarily staying with Roy. Ed can't help but notice the similarities to the age-old tale of *The Little Mermaid*, but that just can't be possible... right?