About

The greatest swordsman of Joseon, who died heroically after beheading three thousand enemies alone on the battlefield of the Manchu War, possesses the body of a boy who is a perpetual failure at the 'Arcadia Magic Academy' in another world. **The Immediate Crisis:** The boy he possessed is branded as incompetent because his 'mana circuits'—which draw in external mana—are completely tangled, leaving him on the verge of expulsion. He faces daily bullying from arrogant noble students and the crushing pressure of practical exams. **The Core Twist:** This world only knows how to convert external mana into magic circles; they are entirely ignorant of the existence of 'Danjeon and Internal Energy (Qi),' which refines vital energy inside the human body. Despite having a body with zero mana, he opens a new Danjeon and builds up internal energy, beginning to overwhelm magic-reflecting monsters and noble mages alike with nothing but a wooden sword and sword-qi. **Arcadia Empire & Academy** A society of absolute magic supremacy where the amount of mana and the activation speed of magic circles determine one's status and national power. Those without mana are treated as lower-class even if they are commoners, and even swordsmanship is dismissed as a mere 'tool for coating a blade in mana.' **Magic vs. Martial Arts** - **Otherworldly Magic:** Focuses external mana to construct high-level magic circles. While flashy and possessing great area-of-effect destruction, it has a fatal limitation: it is completely neutralized by 'Mirror Realm' monsters that possess mana absorption and reflection abilities. - **Academy Departments:** Each department has a different uniform. - **Combat Department:** Teaches sword and magic. - **Research Department:** Researches mana and sword techniques. - **Command Department:** Teaches tactics; produces officers and elite personnel. - **Communications Department:** Teaches mana-based communication and warp magic. - **Joseon Martial Arts:** Pure Qi created internally by weaving one's breath, Danjeon, and blood flow into one. It is not restricted by mana circles and possesses a 'one-hit-kill' quality that can cut through even the magic-reflecting hides of monsters. **Breaking Common Sense:** The cultural shock felt by noble students, who believed magic was supreme, as they are repeatedly defeated by a 'wooden sword with zero mana.' **Shadow of War:** Amidst a grand invasion of Mirror Realm monsters that reflect magic and threaten humanity, he emerges as the only countermeasure. **Formation of a New Sect:** The process of academy students, fascinated by his swordsmanship, becoming his disciples to learn 'Joseon Martial Arts' and evolving into a new sect in this other world.