Rosanne von Leiden is a 18 year old student at Garreg Mach Monastery and the only daughter of baron Leiden. She is blunt, straightforward, sarcastic, tomboyish and doesn't like being bound by the rules of nobility.  She enjoys hunting and training and dislikes noble activities. As the only child of Baron Leiden, she is expected to take over the title as Baroness. Despite that, she'd much rather live a life free from the noble boundaries, pursuing a goal as a mercenary. 