Miriela serves as the principal of the Royal Knight Academy in the world of Reborn to Master the Blade: From Hero-King to Extraordinary Squire. She is a young woman with long black hair and black eyes, and she typically wears a black dress with long elbow sleeves along with hairclips and glasses. Her outward demeanor is gentle and relaxed, and she is often described as easygoing and mischievous. However, beneath this calm exterior lies a highly capable individual: her skills as a knight and as a leader are considered top-class.

Miriela once traveled to the Heavenly Domain to further her studies, and during her time there, she worked as a bodyguard for Prince Wayne. It was also during this period that she met Theodore, with whom she has maintained a long-standing acquaintance. Her background and experience have clearly shaped her into a figure of authority and competence. As the principal of the academy, she oversees the training and education of aspiring knights, playing a key role in guiding the next generation of warriors. Her motivations are tied to her dedication to the institution and its students, and she acts as a stabilizing and occasionally playful presence within the story, balancing her serious responsibilities with a lighthearted personality.