Claymore, a manga series by Norihiro Yagi, is set in a medieval world plagued by Yoma, humanoid shape-shifters that feed on humans. A mysterious group, known as the Organization, creates human-Yoma hybrids to exterminate Yoma for a fee. The public refer to these warriors as "Claymores," alluding to their large swords, or "Silver-eyed Witches," due to their silver eyes.[1]