Diana Is a Strange Mermaid summary: Once upon a time, in a certain country. A mermaid was brought to a castle. This rare mermaid, with legs split in two, was to be presented to the king of a neighboring kingdom. was to be presented to the king of a neighboring kingdom…. But when the prince saw the mermaid, he said. Will you become my queen? And so begins an unexpected life together! What will happen to their love?