Camilla's weapon

 As Guardian's Camilla's parents had a whole basement filled with various weapons and on uncovering this she was drawn to one in particular, the Katana.

This weapon was used by the Samurai of ancient and feudal Japan. It has a distinctive appearance: a curved single-edged blade with a circular or square guard and long grip to accommodate two hands.
The Katana is well suited to combat where victory depends heavily on a quick draw and short response time which is definitely what Camilla needs given that her enemies hold immense power and agility.