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 ?? (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.