The Regressed Sword Saint’s Magic Theory

A brief description of the manga The Regressed Sword Saint’s Magic Theory:

In a world where humanity battles monsters, every warrior faces a critical choice between two paths: become a mage who wields supernatural miracles, or become a swordsman who masters superhuman techniques. Oscar chose the path of the sword. From childhood, he swung his blade relentlessly, eventually climbing to the pinnacle as a 剣聖 (Sword Saint)—the highest rank a swordsman can achieve. He cut down ferocious monsters, received the admiration of the people, and walked a path that anyone would envy. Yet deep in his heart, Oscar harbored a secret longing—he had always wanted to become a mage instead. Show more