Five swords which belonged to an elite band of Dasarin agents The Knights of Reynol, formerly under the command of the Kah'Rul who sword to break from their indoctrination upon being put on a planet where the locals would be strong enough to resist the Kah'Rul. These swords are made of a super durable alloy and the blade edge which harnesses Flare from The Alter.
The original wielders were a collective of five knights who's forefathers were "sworn" to the Kah'Rul. In secret, the true oath they held to was to aid the liberation of whatever planet showed enough promise to oppose the Kah'Rul, and subsequently free the Dasarin from enslavement.
Upon reaching Earth, the order aided in the initial resistance and arranged that their children or next of kin would receive the sword upon death.
NOTE: Presently known swords reside with Carver, Mark, Ruth, Corrin, and one unknown which belonged to Ben.