Spoilers for That Time I Got Reincarnated as a Slime Season 3, Episode 2 reveal that the Holy Empire of Lubelius is secretly run by vampires. The empire, led by Luminus Valentine, presents monsters as a threat to all humanity, despite vampires and Demon Lords inhabiting it. The vampires feed on a small portion of humans' life force without killing them, maintaining the human population's happiness. Hinata Sakaguchi, the Empire's hero, faces a dilemma as Tempest's existence challenges the empire's religion. Yet, the similarities between Rimuru and Luminus suggest a potential for peace amid the conflict. That Time I Got Reincarnated as a Slime follows Satoru Mikami, reincarnated as a powerful slime in a fantasy world, navigating his new, strange life.