"Zombie Fairy" is a manga series that blends elements of horror, fantasy, and dark comedy. The narrative centers on a young girl named Mii, who tragically dies in a car accident but is resurrected as a zombie by a mysterious and eccentric fairy named Fey. Fey, who claims to be a "zombie fairy," grants Mii a second chance at life, but with a catch: Mii must now consume the brains of the living to sustain her undead existence. This grim condition forces Mii to grapple with her new reality, balancing her lingering humanity with the monstrous instincts of her zombie nature.

As Mii navigates her undead life, she encounters a variety of characters, both human and supernatural. Among them is Akira, a classmate who becomes aware of Mii's condition and chooses to help her, despite the dangers. Their relationship evolves as they face challenges together, including other zombies, vengeful spirits, and the moral dilemmas posed by Mii's need to feed. Fey, the enigmatic fairy, serves as both a guide and a source of chaos, often manipulating events for her own amusement or cryptic purposes.

The story delves into themes of identity, morality, and the struggle between life and death. Mii's journey is marked by her attempts to retain her humanity while confronting the darker aspects of her existence. The series explores the consequences of her actions, the impact on those around her, and the blurred line between good and evil in a world where the supernatural intersects with the mundane. The narrative is punctuated by moments of humor and absurdity, contrasting with its darker undertones, creating a unique tone that balances horror with levity.