Onna Kyoushi Nijuusan-sai Episode 1

Honjou Rumiko, a school teacher, finds herself ensnared in a sinister plot of blackmail and deceit. Two Yakuza gang members capture her, forcing her into sexual encounters not only with them but also with their clients. As the situation escalates, they begin to recruit her students, pushing Rumiko to the brink. Overwhelmed and desperate, she is compelled to end her engagement, watching helplessly as her life spirals out of control.