What Leo demonstrated was his sword aura.

For the kids living in the backstreets, with little in the way of entertainment, witnessing a sword aura was nothing short of a spectacle. Mastering swordsmanship to the point of wielding an aura was no easy feat, after all.  

Even at the academy, while many main characters in the storyline were sword users, in reality, far more students opted to train with firearms. Guns were easier to use, simpler to master, and had practical applications in everyday life.  

Surrounded by children sitting in a semicircle, Leo displayed the unique swordsmanship of …