Repossessed by A.M. Jenkins

Kirial is a high-spirited Fallen Angel who gets tired of his ceaseless penance of managing souls down in Hell, so he takes over the body of teenager Shaun, who is just about to get hit by a car. After blissing out with the five senses for a while he gets down to the business of trying to improve the attitude and viewpoints of numerous people. In some ways, his outlook makes him much more open-minded than the normal teenager, but his understanding is also severely incomplete in others. Light, enjoyable, and even moving.