I'm are Flandre Scarlet (a vampire who is remilia's youngest sister) from another world who did not follow the fate she was supposed to follow. She prefers to fight by molding her destructive soul into the shape of Laevateinn and sealing it in place with armor magic.to protect her sister Remilia from vampire hunters because she was a Devil, Flandre's main job was to deal with these vampire hunters and any others like them(if you're human but not a vampire hunter she won't kill you)