Greetings yet again! Here I shall be explaining a bit regarding the Regalia's. As we all know, the Regalia's are blessed weapons given from the Immortals to the Original Kings to combat the forces of Archdaemon. Each of these weapons are unique and are of the highest caliber in their respective category and hold close to godlike potential in the hands of their true owner. However, just anybody is capable of wielding them but not everybody can draw out the Regalia's true power.
The Regalia's were powerful weapons capable of destroying even the landscape of Terra and were even strengthened even further when they were all exposed to the blood their respective Immortal benefactor. These Regalia however have been hidden for years by the Original Kings and nobody, even their own descendants are aware of their location. Their very descriptions and names are only known throughout the various writings that the Original Kings had written about regarding them which are in the possession of their respective kingdoms.
More information regarding the Regalia will be revealed as time passes, so for now we will have to assume that they are just a legend like what everyone believes they are.