Confinement Sister Teachers(2006)

Confinement Sister Teachers is a drama that follows Akiko, a newly hired high school teacher who works at the same school as her elder sister. Living under the same roof as her sister and brother-in-law Norio, Akiko finds herself drawn into a forbidden affair with him, unable to resist despite knowing the consequences. When she visits a student's home one day, unexpected events unfold that threaten to expose her secret and upend her carefully constructed life. The film explores themes of desire, guilt, and the collision between professional duty and personal temptation.