It was just one mistake and the evil spirit wasn't even underestimating the opponents this time.
The attack pattern that it was using with the curses, spears, and the other weapons was random and set up using the most predictable moves of the opponents.
The degree of finesse the evil spirit put in the attacks was the best from its side, but this situation...
-Clank! Clank! Clank!
The weapons that it was using to attack just a moment before had become useless defensive shields.
It was strange how the boy, that small bastard, did something so unexpected!
Not only he left his place and the back of his partner alone, he almost endangered her life there.
The evil spirit had one goal, and that was to kill the two of these bastards and after that reclaim its toys, hiding some distance away under those powerful shields.