Eiji, widely recognized as the strongest hero in Holy Sword Academy, received the prestigious "Supreme Holy Sword" as his rightful possession. Nevertheless, disappointed with the arrogance of his alma mater, he leaves his heroic position behind and decides to live amongst the common people. With his own aspirations fueling him, he sets out to create a sword worthy of his skills and education. Despite facing countless obstacles, Eiji persevered, and finally unearthed the answer to making the ultimate weapon - by using the remains of vanquished creatures as its key components.