Angels of Death, Vol. 4

This manga follow the story of Zack and Ray, two prisoners bound by a vow that is about to be tested. Their prison guard, Cathy, wants to expose the weakness in their bond and inflicts punishments on them. Matters worsen when Cathy gives Zack a special "medicine" that makes him want to kill Ray. Will the pair survive the treacherous path ahead? Find out in this action-packed volume.