The Chaos Entry. The Magical Intervention Agency

This paranormal sci-fi fantasy features the incredibly dangerous adventures of a nineteen-year-old extraterrestrial as he embarks on missions with a magical agency known as the M. I. A [Magical Intervention Agency], dealing with monstrous threats from faraway worlds in a bid to keep the Earth safe. The first book of the series ends with Daniel throwing himself into a rift to save the world, with this singular action setting off a chain of events that sets Daniel on a path to facing off against a force far, far greater than himself.