Rita is the vice captain of "Immortal Blades" and the trusted adjutant of Durandal, and one of three S-rank valkyries in Schicksal working under Otto. Not much is known about Rita as she is very sercretive and discreet about sharing information. It is possible that only Durandal and the other valkyrie members of "Immortal Blades" would have more knowledge of her.