Axis Mundi Reaper 3: The World of Midnight.. Axis Mundi Reaper, #3

It has been 172 days since Kiyoshi Mortis (the "Obelisk Reaper) shattered the connection between Earth and Heaven. In the wake of his victory, the sun has vanished into a perpetual dark age, and a glitch in reality has left the world's clocks frozen on a single, unchanging day. While Kiyoshi struggles to maintain order within the walls of Magenta Falls, the rest of the globe has descended into a lawless "ice age" where survival is the only currency.
But peace is a luxury the Reaper cannot afford. When a desperate religious splinter group from the nation of Armada kidnaps Jeslyn Cerise, they intend to use her taboo mutational magic to cultivate a "super-plant" that can solve a national famine...and prove they are favored by a God Kiyoshi already killed. Forced into the desolate southern sectors, Kiyoshi and his soul-merged companion, the fallen angel Darius, must storm a gemstone-encrusted fortress to reclaim what is theirs.
But as Cerise's botanical creation begins to roar and consume everything in its path, Kiyoshi realizes that the "paper religions" of the old world are the least of his worries.