The Genius Orphan Who Trains the Sword

Living day to day by begging just to survive. The sword he secretly picked up in the middle of the night fit snugly in his hand. “Robin, how about trying to become a knight?” “Eh, a knight? Someone like me?” “There’s no harm in giving it a try. Starting today, you’ll practice the sword.” “S-Should I?” The boy became captivated by the act of swinging a sword. — Description from novelcodex.org