A long time ago..under the the ocean..there were 2 kinds of human fishes the sirens and the mermaids..the 2 species fell in love..there species began to expand..but one day.. The sirens and the mermaids fought..and had a war

Now the new king of the sirens Kokushibo was the crulest and the meanest sirens of the sea..he was serious he never gave anyone a second chance, he had a very big Katana that looked like it had another of eyes and it could kill anyone