Ghoul ga Sekai wo Sukutta Koto wo Watashi dake ga Shitteiru

A thick fog has transformed many humans into monstrous creatures, and humanity is struggling to survive against them. Leon Crossheart is an adventurer who hunts these ghouls, despite being one himself. His abilities make him a powerful fighter, but he is feared by those he tries to protect. One girl, Alice, who he rescued, is determined to become his apprentice regardless of his resistance. She sees past his monstrous form and offers him gratitude and companionship. It remains to be seen whether she will help bring hope to his life or if he will push her away, keeping his potential redemption out of reach.