Supreme King Sword

Supreme King Sword (覇王剣 Haō-ken) is Yaiba New Sword.

The legendary sword that once wielded by Susanoo to seal Yamata no Orochi inside Japan. In Pyramid arc, when Yaiba fought Jewel, Yaiba's Raijin-ken and Fūjin-ken changed their shapes into one sword, the Supreme King Sword. It is far stronger than Raijin-ken and Fūjin-ken. It changed the wielder's fighting powers into its power. At his top, the blade is replaced with one made of light, it is presumed that as the Maoken presents powers of darkness and is its counterpart its powers are based on light.