Verge is a sword crafted and wielded by Edge, it starts out as a standard-type sword, being able to take on enemies with a few hits, however as the story progresses it's true power is activated and becomes the ultimate weapon.
However, in order for it's true power to be realized, Edge must go through trials in order to combine the sword with legendary power.
Verge starts out as a simple sword crafted by Edge and also the only weapon to turn out perfect. This was Edge's one and only weapon of choice, especially when it came to melee.
Verge is a longsword.