darynthe

Princess Knight a manga by Osamu Tezuka, written in the fifties and with several adaptations, is the story of the heiress to a small realm who has both male and female souls, and crossdresses as a man (and even pretends to be one, duping everyone), is the best swordsman in the realm, is level headed, competent, and fights for justice and to protect the innocent. Her name is SAPPHIRE. Known as Lady Knight. To me it looks like Brienne has references to it.