Hrunting and Nagelring

Hrunting and Nagelring(フルンティング/ネイルリング; Furuntingu neiruringu) are the twin swords of the hero Beowulf, the protagonist of an old-english epic poem of the same name. Considered both the oldest respective demonic and holy swords, yet younger than Rhongomiant, Hrunting and Nagelring were lost in hystory due to the former's unstable and unreliable efficiency and the latter's balanced yet fragile composition.

Discovered yet again by the sword-hunter Arthuria Pendragon, they would later be handed to her friend Elizabeth Albedo, which both became their signature swords in blade fights, since only her was able to subdue both swords and their powers for her own, despite lacking the natural light element.