Dragon King Sword

The Dragon King Sword (竜王剣, Ryuu Ou Tsurugi) is a famous sword and heirloom of the Scarlet Moon Empire. The Sovereign Rune is embedded in its hilt. Barbarosa Rugner apparently wielded this sword after he gifted his personal sword, Prakk, to Teo McDohl.

With the Sovereign Rune, the Dragon King Sword could transform its wielder into its rune incarnation. The location of the sword after Barbarosa's defeat is unknown.