Married woman teacher molestation train

The beautiful and kind teacher, Hisae, is extremely popular with her students. However, behind the scenes he was subjected to persistent sexual harassment by Sakamoto-sensei, the son of the school's chairman. Hisae is sexually harassed by Sakamoto again today. However, the act was witnessed by a student, Kuroiwa. Kuroiwa molests Hisae on the train on his way home, using the previous act as a joke. Hisae can't resist. But that wasn't the end of the nightmare. What Tsuyoshi saw when he went to the classroom the next day...