Brynhidlr

Brynhildr was one of the most powerful Valkyrie, who hunted down and collected evil spirits for the Chief God, but sacrificed herself to seal an S-Rank Evil spirit, turning into a demonic sword sealed in the Japanese Branch of the Hero Clan being wielded by Basara Toujou. Not much is known about Brynhildr's personality, but she was once known as a rather dutiful Valkyrie who served the Chief God without question, even sealing away a dangerous Evil Spirit at the cost of her body and soul. After becoming a demon sword, Brynhildr has shown to prioritize her life as she chose Basara as her host to keep from being erased by Banishing Shift, and again after Ornis tried killing Basara.