I Am the King of the Gloom

Gloom Dwellers. Evil spirits that devour souls and are invisible to the human eye. Only members of the Order of the Light can fight back against their might. These exorcists hail from ancient blessed bloodlines which confer upon each of them individual spirit powers they use to fight Gloom Dwellers. Caden McLaren is a 'tainted blood' - the product of a pairing between the most powerful exorcist to ever grace the Order and a plain human. Due to his tainted blood, he bears no spirit powers except the ability to perceive Gloom Dwellers. His mother's death in childbirth made him her only heir, and so Caden is adopted by the Order and trained to be an exorcist regardless of his inability to do so. And his disinterest in doing so. While it seems the Gloom Dwellers have nearly been wiped from the world entirely, a new and staggeringly powerful Gloom Dweller has formed, possessing both genius intellect and sharp cunning. Caught unaware, the Order is thoroughly devastated in a sudden massive attack orchestrated by this new leader, and only Caden and a few of his friends survive the purge. In the process of escaping, Caden discovers he is the first tainted blood to somehow have a spirit power after all: he controls the Gloom - a cursed and malleable goo that Gloom Dwellers naturally create and wave to their purposes. Caden is the ultimate King of the Gloom, and the last dying ember of the Order of Light.