Yoru no Houteishiki

Saeki Sayoko arrives at an elite all-boys academy under the guise of a school nurse and counselor, but her striking beauty and curvaceous figure mask a far more complex reality. She is not merely there to tend to the students' everyday ailments; she carries hidden depths and motives that remain concealed from those around her as she settles into her new role within the institution's walls. A dark crisis soon engulfs the campus when several boys are discovered dead, having fatally overdosed on a highly potent drug. Given her position and access, suspicion quickly falls upon Saeki herself. However, the illicit distribution of narcotics is only the surface of a much deeper conspiracy unfolding after hours. The academy harbors dangerous secrets once the sun sets, and sinister activities extend far beyond simple drug dealing. Caught in a web of mounting accusations and lethal mysteries, Saeki must race against time to clear her name and uncover the true mastermind behind the tragedy. As she delves into the shadows of the school, she faces the daunting challenge of identifying both the individuals and the hidden forces responsible before more lives are lost.