Elysium

Book Six of the Liminality Series James Moody, stranded in the afterlife realm of Lethe is pining for his dead girlfriend, Gaia. He braves the penance of Mt. Abdiel's misty heights to join her in Elysium, a stepping stone to even loftier realms of the soul. The rebellious Gaia, however, seems to have joined a war against the Powers-That-Be, a struggle in which the reluctant James soon finds himself at the very crux.