Reborn as the Corpse King

Red rain triggers the apocalypse. Leo Vance is betrayed by his girlfriend, Chloe Rhodes, and brother, Cole Landon. Reborn before the apocalypse with Kylin Blood Jade, he awakens The Umbral Grimoire of Necromancy. He stockpiles supplies, renovates a villa into the Corpse King's Fortress, and humiliates his betrayers. He subjugates zombies, refines corpse soldiers, slays The Crimson Empress, becoming King of all Corpses, and establishes his new world order.