"Vampire Dormitory" is a supernatural romance manga that centers on Mito Yamamoto, a homeless and androgynous high school student who struggles to survive after being abandoned by their family. Mito’s life takes a dramatic turn when they encounter Ruka Saotome, a vampire who is drawn to Mito’s blood due to its unique scent. Ruka, who has been unable to consume blood from anyone else for years, offers Mito a place to live in exchange for becoming his personal blood source. Mito agrees and moves into a dormitory inhabited by Ruka and his fellow vampires, who are all members of a secretive and elite group.

The dormitory, known as the "Vampire Dormitory," is a place where vampires and humans coexist under strict rules. Mito’s presence disrupts the delicate balance, as their androgynous appearance and unique blood make them a target of curiosity and desire among the vampires. Ruka, who initially views Mito as nothing more than a source of sustenance, begins to develop complex feelings for them, blurring the lines between predator and protector. Meanwhile, Mito struggles to navigate their new life, balancing their growing attachment to Ruka with the inherent dangers of living among vampires.

The story explores themes of identity, belonging, and the complexities of relationships between humans and vampires. Mito’s androgyny plays a significant role in the narrative, as it challenges traditional gender norms and adds layers to their interactions with the vampires. Ruka’s character evolves from a cold and detached vampire to someone who grapples with emotions he had long suppressed. The supporting cast, including other dormitory residents, adds depth to the story, each with their own motivations and conflicts tied to their vampiric nature.

As the plot progresses, tensions rise within the dormitory, and external threats emerge, forcing Mito and Ruka to confront their feelings and the precarious nature of their arrangement. The manga blends elements of romance, drama, and supernatural intrigue, creating a narrative that is both emotionally charged and suspenseful. The dynamic between Mito and Ruka serves as the core of the story, driving the plot forward while exploring the boundaries of trust, dependency, and love in a world where humans and vampires are inextricably linked.