Eiji, a renowned warrior from the esteemed Holy Sword Academy, gained notoriety for being the most powerful hero and earning the right to wield the "Supreme Holy Sword," one of many sacred swords in existence. Despite his newfound recognition, Eiji grew disillusioned with the arrogance of his alma mater. As a result, he renounced his position as a hero and sought out a new path. He endeavored to craft his own weapon that would reflect his unique abilities and personal touch. After much experimentation and perseverance, he arrived at his ultimate goal of creating the most potent sword using the bodies of monsters as its source material.