C459 I'm Willing to Give up
There was a legend that if a mermaid's keepsake was obtained, a disaster would befall them.
But there were also stories of mermaids marrying humans, and in most cases men stealing their hats or belts, or combs and mirrors.
When it was properly hidden, the mermaid would live with him, and once she found what she had lost, she would return to the sea
