Claymore, Vol. 2: Darkness In Paradise, V. 2

In a world where monsters called Yoma prey on humans and live among them in disguise, the Claymores, half human and half monster warriors, must fight the Yoma and their own savage impulses in order to survive. A Claymore - a female warrior named for the sword she carries - travels from medieval village to village to destroy Yoma, monsters who disguise themselves as humans and who are almost impossible to kill. Claymores are half-humans, half-demons who willingly transformed themselves by mixing their blood with monster's blood. Claire, nicknamed silver-eyed killer, is such a powerful Claymore, she can slay a Yoma using only one hand. But she must constantly struggle to keep from becoming a monster herself.