Counter is the attack learned in Brutal Styles once reaching the fourth rank. To perform such an attack, the player character will have to time his/her attack so that their weapon hits the enemies weapon, forcing them to do a 180 degree spin, then executing the final blow for that particular enemy by impaling them from behind.
Those who witness this will comment on it, for an example the bandits may say something along the lines of "What!? No one can be that skilled!!" or "We're fighting some sort of demon!"