Playing One Piece: Legend of the Rainbow Island (Niji no Shima Densetsu || 虹の島伝説) on Wonderswan One. Playing One Piece: Legend of the Rainbow Island (Niji no Shima Densetsu || 虹の島伝説) on Wonderswan One. Playing One Piece: Legend of the Rainbow Island (Niji no Shima Densetsu || 虹の島伝説) on Wonderswan One. Playing One Piece: Legend of the Rainbow Island (Niji no Shima Densetsu || 虹の島伝説) on Wonderswan.