Geist: The Sin-Eaters。

id:hungryjackさんの日記で知ったんですが、

A rulebook for playing the Sin-Eaters, mortals who have passed through the gates of Death and returned, bonded with the unusual shades known as geists. An expanded look at death and the Underworld in the World of Darkness, from simple ghosts to strange threats such as the Kerberoi. Provides new player types and antagonists for crossover chronicles as well as chronicles focusing on Sin-Eaters.

だそうな。フォーラムでも取り上げられてますね。