The Regressed Sword Saint’s Magic Theory

All who stand against monsters are eventually forced to make a choice.
One path is that of the mage, wielding magic capable of creating supernatural miracles.
The other is the path of the swordsman, mastering inhuman techniques through sheer skill.
Oscar, a swordsman, had swung a blade since early childhood and rose to the rank of the highest Sword Saint.
He cut down ferocious monsters, earned the admiration of the people, and lived a life envied by all.
Yet deep within his heart, he harbored a secret longing, an unfulfilled admiration for the path of the mage…?

(Source: Piccoma, edited)