Claymore, Kureimoa in Japanese, is written and illustrated by Norihiro Yagi. It was first published in 2001. The series ran for 13 years till 2014, it lasted for 24 volumes. The manga spawned a 26 episode anime in 2007, by the same name. There is also a game based off the series, Claymore: Gingan no Majo, that came out in 2009.