Deep in the remote countryside of the kingdom of Liberis, a young girl named Fichelle Harbeller arrives at a modest sword-fighting dojo in the village of Beaden. The dojo is run by Beryl Gardinant, a middle-aged swordsman who considers himself nothing more than a humble country instructor. Fichelle is fiercely competitive and determined, throwing herself into training with an intensity that quickly sets her apart from the other students. Within months, she not only rises to the top of the dojo but also discovers a latent talent for magic, awakening abilities that merge the blade with sorcery.

This spin-off manga follows Fichelle's journey as she strives to become a mage knight, a warrior who masters both sword and spell. Under Beryl's patient and rigorous tutelage, she hones her physical techniques while simultaneously learning to channel her newfound magical power. Over the course of several years, she grows into a formidable fighter, but when the time comes to graduate from the dojo, she challenges Beryl to a serious match. The encounter leaves her acutely aware of the vast gap between them, forcing her to confront the limits of pure swordsmanship.

Determined to reach heights that sword alone cannot attain, Fichelle decides to pursue formal education in magic. She travels to the capital and attempts the entrance examination for the prestigious Mages' Institute. During the test, nerves and pressure cause her to struggle, but she recalls the combat drills and sparring sessions Beryl taught her, adapting those lessons to demonstrate a unique blend of physical movement and spellcasting. The story then opens into a new arc as she enters the academy, meeting fellow students and rivals who will push her further. Throughout it all, her deep respect for Beryl and her burning ambition to become a master of both disciplines drive the narrative forward.