Puella Magi Madoka Magica(魔法少女まどか☆マギカ)

In a world where witches - evil entities whose hearts have been distorted by darkness - prey on innocent civilians, one can make a supernatural contract to obtain magical powers and hunt these witches down as a magical girl. Madoka Kaname is one such recruit, but she soon learns of the anguish and peril associated with her new role.