Claymore

In a world where humans coexist with sentient monsters called Yoma that feed on human innards, an organization has created an order of half-human, half-yoma warriors to protect humans from the yoma, for a large fee. The people of this world have dubbed these warriors "Claymores" based on their swords. They are also referred to as "Silver Eyed Witches", based on their appearance and seemingly cold nature toward others. Each Claymore has a rank number which is based on their strength and ability. There are 47 ranks corresponding to the number of regions of the land/world.