"Angel Heart" is a Japanese manga series created by Tsukasa Hojo. It follows the story of Saeko, a skilled assassin who is given a second chance at life after receiving a heart transplant from a young girl named Miki. This new heart brings unexpected changes, as Saeko begins to experience memories and emotions connected to Miki's life. The series explores themes of redemption, love, and the impact of choices. As Saeko navigates her new life, she confronts her past and the challenges of her profession while forming connections with those around her. The blend of action and emotional depth makes "Angel Heart" a compelling read.