In a realm teeming with vampires, Saki Fujimiya leads a double life as a vampire slayer while navigating the complexities of high school routine. Her focus shifts to a particular vampire, Miyoko Kujou, whom she attempts to vanquish in vain during a confrontation. Surprisingly, Miyoko, under the guise of a foe, professes love for Saki instead of malice. This declaration sets the stage for a peculiar dynamic where Miyoko repeatedly indulges in Saki's blood, claiming affection while Saki grapples with conflicting emotions. Despite the allure of this forbidden bond, Saki remains steadfast in her duty to eradicate Miyoko, raising questions about the true nature of her actions. Is her resistance fueled by loyalty to her hunter role, or does a deeper connection lurk beneath the surface?