Yoru no Houteishiki

夜の方程式

In "Yoru no Houteishiki," Saeki Sayoko leads a double life as the school nurse and counselor at an all-boys academy, concealing her true identity. After several students die from a powerful drug overdose, the attractive and curvaceous Saeki emerges as the main suspect. However, her activities after dark go beyond just selling drugs. Can Saeki uncover the heads of the drug ring and identify those responsible before it's too late?

Adapted to anime

Immorality

Chapters

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