Pestilence by Laura Thalassa

The Four Horsemen

In a world ravaged by the arrival of the Four Horsemen, the story follows Sara Burns, a firefighter who becomes entangled with Pestilence, the first of the Horsemen, as he spreads a deadly plague across the globe. Captured by Pestilence, Sara is forced to accompany him on his devastating journey, but as they travel together, she discovers a complex being beneath his apocalyptic exterior. Their relationship evolves from animosity to a deep, conflicted bond, challenging both of them to confront their beliefs about humanity, love, and redemption amidst the chaos of a dying world.