"Vampire Dormitory" centers around Mito, a young woman who disguises herself as a man to survive after being abandoned by her family and left homeless. Struggling to make ends meet, Mito encounters Ruka, a vampire who offers her a place to stay in exchange for her blood. Ruka, who is unable to drink blood from anyone else due to a curse, finds Mito’s blood uniquely irresistible. Mito agrees to the arrangement and moves into the dormitory where Ruka resides, a place inhabited by other vampires and supernatural beings.

The dormitory becomes a focal point for the story, as Mito navigates her new life while maintaining her male disguise. Ruka, though initially cold and aloof, gradually develops a complex relationship with Mito, oscillating between treating her as a source of sustenance and showing moments of genuine care. The dynamic between the two is further complicated by the presence of other dormitory residents, each with their own distinct personalities and supernatural traits. These characters include Kano, a cheerful and protective vampire, and Ren, a mysterious and brooding figure with his own hidden agenda.

As the narrative progresses, Mito’s secret identity becomes increasingly difficult to conceal, leading to moments of tension and conflict within the dormitory. The story explores themes of trust, identity, and survival, as Mito grapples with her dual existence and the dangers posed by both the human and supernatural worlds. Ruka’s curse and the reasons behind it are gradually revealed, adding layers to his character and his connection to Mito. The series balances moments of drama and suspense with lighter, comedic interactions among the dormitory residents, creating a blend of genres that includes romance, supernatural intrigue, and slice-of-life elements.

The plot also delves into the broader vampire society and its hierarchies, introducing antagonists who threaten the fragile peace of the dormitory. These external conflicts force Mito and the others to confront their vulnerabilities and strengths, further deepening their relationships. The story’s pacing allows for gradual character development, with each resident of the dormitory receiving attention to their backstories and motivations. By the end of the series, the bonds formed within the dormitory are tested, and the characters must make choices that will determine their futures.