Necromancer in the Apocalypse(I was reincarnated as a child.)

Centuries of conquest, death, and dark magic have left Balzar, one of the feared necromancers of the Dark Trinity, at the brink of eternity’s end. But when the Paladin King, Salomon, shatters his reign and casts him into the Void, Balzar’s life—and death—take an unimaginable turn. Awakening in a world both familiar and grotesquely alien, Balzar finds himself reborn in the body of a dead woman, her corpse his cradle, her blood his lifeline.