Hikage Karasuma is the beautiful new school nurse at Tsutsutsumori High School, but she carries a dangerous secret: she is a member of an ancient and noble vampire clan. Bound by a strict family code that forbids revealing her true nature, she strives to become an ideal teacher who is admired and trusted by her students. This puts her in a constant balancing act between her vampire instincts and the ordinary demands of school life. Her days are filled with lighthearted, everyday incidents that are complicated by her supernatural reality, such as controlling her thirst for blood or avoiding sunlight during school events. As she navigates her relationships with students and faculty, she must also contend with others who slowly begin to suspect her true identity. The story unfolds in a comedic and slice-of-life tone, with Hikage’s earnest efforts to fit in while hiding her heritage. As the narrative progresses, the secret grows beyond her personal life into something that reaches a national scale, and she must face the consequences of her dual existence. The manga follows her journey through 19 chapters, concluding with her choice between her vampire lineage and the human connections she has built.