This is a story...about a pirate named genji shimada and a mermaid named shiina..genji was on his ship tagged along by his brother hanzo and his crew they've taken the liberty to find something called the crystal of the sea or heart as you well.. legend says that whoever has the crystal has the power of the sea and that's exactly what the brothers desire but..what if they had met a fare maiden swimming in the water lost from her home?.. and is taken captive abroad their ship..and what if the playboy shimada falls in love with this women...is it forbidden for a human to fall in love with a mermaid..?