Claymore (2007)

A shapeshifting demon called "youma" descends upon Raki's village, bringing terror with its hunger for human flesh. Amidst the chaos, a mysterious woman with silver eyes enters, carrying only a sword. She is a "Claymore," a hybrid created to hunt and eliminate these monsters. After Raki's family is slaughtered, the Claymore saves him, but he is soon cast out from his home. Left with no options, Raki joins Clare, the Claymore, on her quest. As they travel and take down youma, Raki learns more about Clare's mission and her fellow warriors, inching closer to the particular youma she longs to destroy.