Kurokami The Animation

Keita Ibuki is a normal young man trying to make a living in the big city by doing some freelance programming. One evening he meets a woman by the name of Kuro, he tries to help her out a bit, offers her some dinner and when she suddenly is attacked he tires to protect her, but ends up loosing his left arm. Kuro then gives Keita her arm and with some kind of healing abilities she manages to attach it, this creates a bond between the two and also makes Kuro more powerful then before, but they need to be in close proximity to each other in order to stay strong... This is the end of Keita's boring old life.