Like a forest of stupas floating in the mist, countless oars are standing like eerie towers on the islands of the Seto Inland Sea. One of these islands, called Noroijima, the Cursed Island, is the den of Torakuma, chief of a pirate gang who is said to be in possession of the Water Magatama. Hikaru and her fellows sail toward Noroijima...
靄の中に浮かびあがる卒塔婆にも似た、無数の不気味な塔。
それは、瀬戸内の海に浮かぶ島々に建てられた櫓であった。
その島の中の1つ、呪島に水の勾玉を持つという海賊の頭、虎熊がいると聞き、島へと渡る光たちだが……。
