The diva Sayoko is sent undercover by Midou to investigate a drug investigation at a school, where she is henceforth employed as a teacher’s aide and nurse. In addition to her investigations, she uses her time at the school to live out her many lustful fantasies with the students. Her opulent figure also conceals a very demonic secret. The student Ryouichi Yano, on the other hand, would do anything to get her to pay more attention to him …
In no Houteishiki, Immorality, 淫の方程式, Sexo en el Internado, Equation of the Immoral, 음의 방정식
