Kozuka, Mumei, Kyo kinko / kyo kanagushi fine metalwork. The gilded dragon god Ryujin is embedded in breaking waves. The depiction is finely sculpted in shakudo and shows the dragon's tail as a double-edged blade (ken, symbolizing strength and spiritual power). In one claw, the dragon god holds the sacred jewel that grants him the power to control the ebb and flow of the tides.