Ria, the Oga Clan Head, and Zara switched locations, arriving in an empty field where they could fight to their heart's content.
Rather than saying they held animosity towards each other, it was better to say that they were just looking for excuses to fight.
Ria was the head of a berserker clan, so her bloodlust could be easily explained. Zara's situation, however, was far more complicated.
Whether it was her nature as a beast, her mysterious bloodline, or even her inherent disposition, none had ever been peace-loving. Zara and Damien grew up together in the First Dungeon and were equally influenced by its environment.
But while Damien slowly learned to control himself and somewhat adapt to society, Zara wasn't the same. Unlike him, she had no reason to do so.