Read The Purgatory Saga #1: People of the Fire Storyline:
When Zachariah Ezekreth was killed in the apocalypse, five guardian angels rescued his spirit and delivered him to Purgatory. The world consists of academies where spirits must pass rigorous tests in order to earn their way up Purgatory's seven layers to Heaven. Zach was placed in an academy at the lowest layer of Purgatory, but he has no memory of his past or why he ended up at this stage...Pages of The Purgatory Saga #1: People of the Fire :