The work contains many elements based on the famous fairy tale The Little Mermaid of Hans Christian Andersen. From the manga were drawn two anime series, Mermaid Melody Pichi Pichi Pitch and Mermaid Melody Pichi Pichi Pitch Pure.
Lucia Nanami is a young mermaid princess of the kingdom of the North Pacific, which came on the earth in search of her pink pearl she gave to a young boy named Kaito Domoto which she saved from drowning. With her friends Hanon Hosho as the Princess of the South Atlantic and Rina Toin as the Princess of the North Atlantic, she fights demons sailors who want to capture and steal their pearl.
